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Olive Oil Hunter News #188

Posted on by The Olive Oil Hunter

Potato Frittata Recipe, Spotlight on Condimento Bianco Senape and Blackcurrants, Steaming Potatoes, and A Surprising Benefit of Exercise for Women

Autumn is a wonderful time to get together with family and friends, and what better way than over brunch? If you’re looking for a simple yet satisfying dish, my potato frittata fits the bill. It features Condimento Bianco Senape, a unique vinegar in my brand new collection of artisanal vinegars from the T. J. Robinson Curated Culinary Selections. Sweet, fragrant, and with a hint of mustard, it’s crafted in the style of a fine Italian balsamic (read below to learn why there’s actually no such thing as “white balsamic”). You’ve never tasted anything like it before—get ready to fall in love! 

Also in this issue…I’m sharing fascinating research on blackcurrants, a powerful member of the berry family that might hold the answer to protecting women’s bones in midlife and beyond. Keep reading and you’ll also find out about a surprising benefit of exercise.

Potato Frittata

  • Potato Frittata Potato Frittata

    Elegant enough for a brunch party, this egg-and-potato dish is also easy enough for a casual weekend breakfast. The potatoes can be steamed a day or two in advance.

    Ingredients

    • 1 pound red potatoes
    • 8 eggs
    • 2 ounces freshly grated Parmigiano-Reggiano cheese
    • 2 tablespoons milk
    • 2 teaspoons freshly ground black pepper
    • Coarse sea salt
    • 3 tablespoons extra virgin olive oil, plus more for drizzling
    • 1 large leek, twiced rinsed, trimmed of the tough, dark green ends, and sliced into 1/4-inch discs
    • 2 tablespoons Condimento Bianco Senape, plus more for drizzling

    Directions

    Step 1

    Cut the potatoes into 1/4-inch slices. Steam them on a steamer rack over simmering water until tender, about 25 minutes. 

    Step 2

    In a bowl, whisk the eggs until no whites show, then whisk in the cheese, milk, black pepper, and 1 teaspoon salt until well combined. 

    Step 3

    Heat a 14-inch skillet over medium heat. When hot, add the olive oil and the leeks. Sprinkle with a big pinch of salt and sauté until the leeks soften and turn light brown, about 10 minutes. Layer on the potato slices, overlapping them a bit. Pour on the egg mixture. Cover the pan and cook without disturbing over medium heat until the eggs firm up, about 8 minutes. Drizzle on the vinegar, cover the pan again, and remove from heat. Let stand for 10 minutes before slicing into wedges. Drizzle each portion with more olive oil and vinegar.

    Yields 4 servings

Healthy Ingredient Spotlight: Condimento Bianco Senape 

Healthy Ingredient Spotlight

Condimento Bianco Senape 

Condimento Bianco Senape, or White Condiment with Mustard

I want to set the record straight—“white balsamic” is not a recognized type of vinegar in Italy. That’s because, by its very nature, balsamic vinegar must be made solely with grape must (grape juice made from all parts of the grapes) that naturally darkens to its signature purple-brown color. That being said, my new Condimento Bianco Senape, or White Condiment with Mustard, is reminiscent of a fine balsamic because it’s crafted in the perfect ratio of two parts white cooked grape must to one part white wine vinegar by the amazing vinegar producers known for their balsamic vinegars, Società Agricola Acetomodena in Modena, Italy. Both the grape must and wine vinegar are made solely from Acemodena’s own Trebbiano grapes, which give it its unique light color, and not their Lambrusco ones, which give traditional balsamic its deep color. 

The idea for creating a complex, mustard-seed infused white wine vinegar in the sweet style of balsamic came from Patrizia Vecchi, the wife of Acetomodena owner Paolo Vecchi. She was inspired by the ancient Roman cooking technique of using a white vinegar along with honey and mustard to get a delicious crust on spit-roasted pork. The white mustard seeds, which are entirely edible, add a subtle layer of flavor to my Condimento Bianco Senape that would be lost in a traditional balsamic. 

You’ll use this mustard vinegar to effortlessly create a rich and silky vinaigrette just by whisking in fresh-pressed olive oil and a bit of salt and pepper. I love its sweetness yet will also blend it with other vinegars when I want a bit more tartness. Use it as a marinade for poultry, pork, and fish. Drizzle it on steak and burgers, gourmet sandwiches with prosciutto and other meats, bruschetta with tomatoes, fresh salads like rocket with pine nuts and a drizzle of honey, and my eggless Caesar salad which along with the potato frittata are just two of the many recipes included in the Vinegar Report that comes with the collection. 

Quick Kitchen Nugget: Steaming Potatoes

Quick Kitchen Nugget

Steaming Potatoes

Steaming potatoes keeps them from falling apart and preserves more of their nutrients than boiling. Simply scrub and slice or cube your potatoes and arrange them in a steamer basket set over two inches of simmering water in a stockpot. You can load the basket with two layers of potatoes, but try to keep some space between the pieces for the steam to get through. The potatoes are done when the tip of a knife easily pierces the flesh; start checking after 25 minutes.

For Your Best Health: Blackcurrants for Better Bones?

For Your Best Health

Blackcurrants for Better Bones?

Research done at the University of Connecticut (UConn) has identified blackcurrants, a tart berry known in French foods and liqueurs as cassis, as a potential way of countering the bone density loss experienced by women in the years surrounding menopause. 

For many years, Ock Chun, PhD, MPH, professor of nutritional sciences in UConn’s College of Agriculture, Health and Natural Resources (CAHNR), has been investigating the berry’s potential to ameliorate a host of conditions including postmenopausal bone loss and osteoporosis. One of her previous studies showed that in mice, blackcurrant supplements helped prevent bone density loss postmenopause, and that the best time to start taking these supplements is in the transition between pre- and postmenopause, before bone loss has significantly progressed. With these findings in hand, Chun and her team wanted to see whether the benefits would translate to people. The new study, published in the Journal of Nutritional Biochemistry, found that the supplements prevented the loss of, and in some cases even increased, whole-body bone mineral density in women.

Blackcurrants

The study involved 40 perimenopausal and early postmenopausal participants between the ages of 45 and 60. They were randomly assigned to take either one or two capsules of blackcurrant powder (392 milligrams per capsule) or a placebo daily for six months. The researchers found that the supplements prevented the loss of whole-body bone mineral density and that the group of participants who took two capsules a day actually showed overall increases in bone mineral density at the end of the six-month trial period.

The researchers looked at changes to the gut microbiome and immune system, which interact to play a key role in bone metabolism. They found that the blackcurrant supplements decreased levels of proteins called interleukin-1 beta and RANKL. Interleukin-1 beta stimulates the expression of RANKL, which causes bone resorption and thus a decrease in bone density. “The reduction in RANKL is important because that can cause shifts toward excessive bone resorption, so we’d want to see a decrease in that,” said graduate student Briana Nosal, first author of the paper.

Taking the supplements also increased Ruminococcus 2, bacteria found in the gut microbiome that help degrade polysaccharides and fibers. This is a key function that transforms the foods we eat into energy. This led the researchers to infer that it could be one of the bacteria driving the protective effects blackcurrant has on bones. “It’s all related, and there’s a lot of research showing the gut can regulate various systems in the body,” Nosal said.

The researchers identified a total of four proteins that had increased expression in the group of participants who took two daily supplement capsules. These could serve as potential biomarkers for the changes in bone density that they observed and potentially allow researchers or medical professionals to quickly and easily assess whether the blackcurrant supplementation is benefiting bone density.

This study is especially important for perimenopausal and early postmenopausal women who have or are at risk of developing osteoporosis. While medications for osteoporosis do exist, compliance is low due because of side effects. If a blackcurrant supplement can improve bone density without the same side effects, it could prove to be an effective alternative.

As the research team continues to study the relationship between blackcurrant and its benefits to the body, they’ll try to better understand why exactly they’re seeing these results and “how all our findings connect to each other,” Nosal said. “Conducting that multifaceted research will really paint the picture of how everything works, the different mechanisms, and what we can do for next steps.”

Fitness Flash

A surprising Benefit of Exercise for Women

Recent research led by Donald S. Wright, MD, MHS, of the Department of Emergency Medicine at Yale School of Medicine and published in the American Journal of Preventive Medicine found that sticking with an exercise program is linked to older women staying out of the hospital.

This retrospective study evaluated 718 older adults with a mean age of 69.5; three-quarters were women. The researchers compared the outcomes of those who participated in a structured, individualized exercise training program at a privately owned gym in their community for at least three months (411 participants) to the outcomes of those who did not. The structured program consisted of guided sessions of cardiovascular, strength, and flexibility training monitored by exercise physiologists. Participants completed a baseline physical assessment and quarterly reassessments of physical performance including measuring vital signs, strength (bicep curl or grip strength), mobility (as measured by the ability to easily go from sitting to standing), balancing on one leg, and aerobic capacity. These data were paired with regional hospital data and a national mortality database. Participants were followed for over two years. 

When the researchers compared outcomes of older adults who participated in the exercise program with outcomes of those who did not, they found that the risk for all-cause hospitalization was 46 percent lower among the women in the exercise program. Surprisingly, this benefit was not seen among the men. 

The researchers pointed out that the study doesn’t establish cause and effect between exercise and not needing healthcare, just a link, albeit a positive one for women. It’s also not known whether the people who dropped out of the structured exercise program exercised independently, potentially narrowing the observed differences between the groups. They also warned that participants may not be fully representative of the broader US population because they were all from one area of the country and had all been motivated to sign up for the gym program on their own.

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Olive Oil Hunter News #183

Posted on by The Olive Oil Hunter

Late Summer Fruit Salad Recipe, Spotlight on Nectarines, Zesting-then Squeezing, Ultra-Processed Foods (UPFs) and Your Sleep, Preventing Falls

It’s still stone fruit season—the perfect excuse for a luscious fruit salad with a zesty dressing. My recipe is a great example of healthy eating that still tastes indulgent. Enjoying “whole” foods, meaning foods in their most natural state, is the antidote to the dangers of ultra-processed foods, which now include insomnia. Read more on this below, along with a new advisory on avoiding falls for people over 65—food for thought for anyone at risk for falling, regardless of age.

Late Summer Fruit Salad

  • Stone fruit salad Late Summer Fruit Salad

    Stone fruit—nectarines, peaches, and plums—are the stars of this juicy dessert, with figs, berries, and a sweet and citrusy dressing in supporting roles. This salad, high in antioxidants, also makes a delicious breakfast

    Ingredients

    • 2 nectarines
    • 2 plums
    • 2 peaches
    • 1/4 cup extra virgin olive oil
    • 2 tablespoons apple balsamic vinegar 
    • 1 tablespoon local honey 
    • Zest and juice of 1 lime (see “Quick Kitchen Nugget” in newsletter)
    • 1 tablespoon chopped spearmint leaves 
    • 2 fresh figs, quartered
    • 1 cup whole blackberries, rinsed and patted dry

    Directions

    Pit and section the stone fruit, then place in a large serving bowl. In a small bowl, whisk together the olive oil, vinegar, and honey. Whisk in the lime juice, zest, and mint. Pour the dressing over the fruit in the bowl and toss gently. Allow the juices and the dressing to meld for 30 minutes. Just before serving, arrange the figs and blackberries on top of the stone fruit.

    Yields 4 servings

Healthy Ingredient Spotlight: Nectarines

Healthy Ingredient Spotlight

Nectarines

Nectarines and plums

Think of nectarines as peaches’ little siblings. The main difference between the two popular fruits is simply genetic—nectarines lack the fuzz gene that peaches have. Also, nectarines tend to be smaller and firmer yet sweeter and more intensely flavored and scented than peaches…a strong aroma is a key sign of ripeness. 

As with peaches, there are dozens of varieties to choose from, though they fall into the same main categories: freestone and cling free (cling-free varieties making slicing much easier) as well as white and yellow flesh. Nectarines are antioxidant rich and have twice the amount of vitamin A and slightly more vitamin C and potassium than peaches, along with vitamin E, B vitamins, calcium, fiber, and some iron. 

To ripen nectarines, store them at room temperature until they’re no longer firm. If you can’t eat them right away, you can refrigerate them, but for no more than three to five days.

Quick Kitchen Nugget: Zest, then Squeeze 

Quick Kitchen Nugget

Zest, then Squeeze 

Whenever a recipe calls for zest and juice from a piece of citrus, always zest first, optimally with a handheld Microplane grater. It’s not only easier than trying to zest halves, but you’ll also get the most zest. When juiving, if you’re using a handheld press, always position the fruit cut-side down into the empty cup to extract the most juice.

For Your Best Health: Why Those Chips Are Wrecking Your Sleep

For Your Best Health

Why Those Chips Are Wrecking Your Sleep

We know that ultra-processed foods (UPFs) are the unhealthiest food choices because they have the highest levels of saturated fats, starches, and added sugars plus all sorts of additives like artificial colors and flavors; are devoid of nutrients; and have virtually no fiber. Packaged baked goods and snacks, frozen foods, and processed meats are typically considered ultra-processed. Much of the research on the detriments of UPFs has looked at the links between these foods and health conditions such as diabetes, obesity, and cancer. Now a new study has added sleep problems, including chronic insomnia, to that list. This can have a snowball effect on health because sleep disorders and insomnia have independently been linked with anxiety and depression as well as health conditions like diabetes and heart disease. With sleep health now a wellness goal on its own right, a better diet can be one way to get there.

Lead investigator Marie-Pierre St-Onge, PhD, associate professor of nutritional medicine and director of Columbia University Irving Medical Center of Excellence for Sleep & Circadian Research, said, “At a time when more and more foods are highly processed and sleep disturbances are rampant, it is important to evaluate whether diet could contribute to adverse- or good-quality sleep. Our research team had previously reported associations of healthy dietary patterns, like the Mediterranean diet, with a reduced risk of insomnia and poor sleep quality (both cross-sectionally and longitudinally), and high-carbohydrate diets with an elevated risk of insomnia.”

Sleepy woman holding pillow and yawning

For this cross-sectional study, Dr. St-Onge and some of her colleagues included 38,570 French participants with a mean age of 50 who completed a sleep questionnaire and at least two 24-hour dietary records. An analysis revealed a statistically significant association between ultra-processed food intake and chronic insomnia, independent of participants’ sociodemographic, lifestyle, diet quality, and mental health status. Overall, the study participants got 16 percent of their daily energy from UPFs. Nearly 20 percent of participants reported symptoms of chronic insomnia, and this group tended to eat more ultra-processed foods.

There are various reasons for the diet-sleep link. First, people who eat more saturated fat, trans fat, sodium, and free or added sugars tend to eat less fruit, vegetables, legumes, and seafood, which are all sources of sleep-promoting compounds, the researchers pointed out. Also, ultra-processed foods are highly inflammatory and can negatively affect the gut microbiome—and the gut microbiome is known to play a role in the quality of your shuteye. 

Fitness Flash: Preventing Falls

Fitness Flash

Preventing Falls

The US Preventive Services Task Force (USPSTF), a volunteer group of experts in different fields from across the country, recently issued its guidance regarding preventing falls in people over age 65. According to the CDC, over 14 million Americans, or one in four adults ages 65 and older, report falling each year, and for about 37 percent, doing so resulted in an injury that required medical treatment or restricted their activity for at least one day.

After its review of existing research, the USPSTF concluded with moderate certainty that exercise interventions provide a moderate net benefit and that multifactorial interventions, such as three-dimensional exercises (movement through all three spatial planes or dimensions: forward and back, side to side, and up and down), provide a small net benefit in preventing falls and fall-related morbidity in older adults at increased risk for falls. Effective exercise interventions include supervised individual physical therapy and group exercise classes. 

While the USPSTF stated that it’s difficult to identify specific components of exercise that are particularly effective, the most commonly studied exercise components were gait, balance, and functional training, followed by strength and resistance training, flexibility, and endurance training. A smaller number of trials included three-dimensional exercise, such as group dance or tai chi classes. The most common frequency and duration for exercise interventions was two to three sessions per week for 12 months, although the duration of the studies ranged from two to 30 months. 

The USPSTF also recommended that a program be tailored to each individual based on the findings of a health and risk factor assessment that might include balance, gait, vision, postural blood pressure, medication, environment, cognition, and psychological health. This could be done by your doctor or another expert familiar with your health history so that he or she can factor in any chronic medical conditions, medications taken, and alcohol use as well whether you had a prior fall, all of which could affect your fall risk. 

The USPSTF statement included a reminder about the multiple health benefits associated with physical activity that go beyond fall prevention: a lower risk of cardiovascular disease events, cardiovascular disease mortality, and all-cause mortality, as well as lower blood pressure, lower risk of type 2 diabetes, and lower risk of high cholesterol. It added: “The US Department of Health and Human Services recommends that adults do at least 150 to 300 minutes per week of moderate-intensity—or 75 to 150 minutes per week of vigorous-intensity—aerobic physical activity, as well as muscle-strengthening activities of moderate or greater intensity and that involve all major muscle groups, twice a week or more.” 

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How EVOO Combats Heart Disease

Posted on by The Olive Oil Hunter

Part I: a Primer on Oleic Acid (OA)

A large body of evidence shows that daily consumption of EVOO confers numerous health benefits, including a significantly reduced risk of cardiovascular disease (CVD).

Factors that contribute to CVD include cholesterol, inflammation, blood vessel function, insulin resistance, and high blood pressure (hypertension). The protective effects of EVOO are attributed to its bioactive components, oleic acid (OA) and more than 30 polyphenols.

In this concise review, we’ll look closely at the mechanisms by which OA works in the body to modify and improve these factors.

What is OA? Oleic acid is a monounsaturated fatty acid (MUFA) that makes up approximately 70 to 80 percent of EVOO by volume. MUFAs and PUFAs (polyunsaturated fatty acids) are the key components of liquid fats, such as vegetable oils and the fats in fish.

Lowers “bad” cholesterol and blood lipid levels: OA lowers LDL or “bad” cholesterol by increasing the amount of LDL that is removed from the blood by the liver and reducing the amount that is produced. In scientific terms, OA increases hepatic LDL receptor activity. Similarly, OA helps lower triglyceride levels by stimulating the liver to increase the breakdown and removal of the proteins that produce triglycerides.

Helps regulate blood pressure: After eating, we experience what is termed the postprandial reflex—a rise in blood triglycerides and increase in blood pressure. When OA enters cell membranes, signals are sent from the intestines to the blood vessels to release vasodilators, which relax the blood vessels, and to block the release of vasoconstrictors, which tighten the blood vessels and raise blood pressure.

Protects the blood vessel lining: Damage to the blood vessel lining (the endothelium) is a major risk factor for CVD. By stimulating the release of vasodilators, OA helps protect the endothelium. OA
also blocks signals from inflammatory proteins that are released with the postprandial reflex, reducing oxidative stress (which can lead to cell damage) and helping prevent atherosclerosis (buildup of cholesterol plaques in the arteries).

Increases insulin sensitivity: In a study of patients with obesity, OA was shown to up-regulate—increase the activity of—a gene that increases insulin sensitivity. OA also reduces insulin resistance in vascular smooth muscle cells, which make up the blood vessel walls.

Studies continue to reveal the ways in which OA exerts its multiple health-promoting effects. In 2018, the FDA determined that evidence supported a qualified health claim that the daily consumption of 20g daily of high-OA oil (EVOO or other high-oleic oil) may reduce the risk of coronary heart disease.

Stay tuned for part II, in which we’ll explore how the polyphenols in EVOO exert powerful protective effects against CVD.

References: 1. Lu Y, Zhao J, Xin Q, et al. Food Science and Human Wellness. 2024;13:529-540. 2. Pirahanchi Y, Sinawe H, Dimri M. Biochemistry, LDL Cholesterol (National Library of Medicine, 2023). 3. Zheng C, Khoo C, Furtado J, Ikekawi K, Sacks FM. Am J Clin Nutr. 2008;88(2):279-281. 4. US Food and Drug Administration. Constituent Update, November 19, 2018. https://www.fda.gov/food/cfsan-constituent-updates/fda-completes-review-qualified-health-claim-petition-oleic-acid-and-risk-coronary-heart-disease.

Olive Oil Hunter News #181

Posted on by The Olive Oil Hunter

Orange-Raspberry Muffins Recipe, Spotlight on Almond Flour, Juicing Fruit, The Benefits of Limiting Processed and Red Meats, and High Intensity Interval Training (HIIT)

Packaged gluten-free baked goods are often tasteless, not to mention filled with additives and other unhealthy ingredients. In just a few minutes, you can bake your own delicious muffins that are so tasty that they won’t provoke eye rolls from gluten lovers. While gluten should be avoided only by those with a sensitivity or celiac disease, a recent study found that everyone can benefit from eating fewer processed and red meats—the health benefits are astounding. Then read about a newly discovered benefit of high-intensity interval training (HIIT).

Orange-Raspberry Muffins

  • Orange raspberry muffins Orange-Raspberry Muffins

    The combination of olive oil and almond flour creates a tender crumb that rivals any flour-based batter and a muffin that’s infinitely more nutritious. I like to use “tulip-shaped” cupcake liners because you can fill them right up to the level of your baking tin for very tall muffins. Also, topping the batter with berries after filling the liners helps keep the fruit from falling to the bottom. 

    Ingredients

    • 3 cups almond flour
    • 1-1/2 teaspoons baking powder
    • 1/2 teaspoon fine sea salt
    • 3/4 cup extra-virgin olive oil
    • 1/2 cup sugar, divided use 
    • Freshly grated zest of 1 large orange
    • 1/2 cup fresh orange juice
    • 6 eggs, separated
    • 1 tablespoon vanilla paste
    • 1 cup raspberries

    Directions

    Step 1

    Preheat your oven to 350°F. Place tulip-shaped cupcake liners in the cups of a 12-muffin tin; set aside.

    Step 2

    In a large bowl, sift together the almond flour, baking powder, and salt. In a separate bowl, whisk together the olive oil, 1/4 cup sugar, orange zest and juice, egg yolks, and vanilla. Fold in the flour mixture.

    Step 3

    In a very large bowl or the bowl of a stand mixer, beat the egg whites on a low speed to break them up, about a minute. Once they start to foam, increase the speed to high and add the remaining sugar. Whip until the whites form stiff peaks, then use a large spatula to gently fold them into the almond flour mixture in 3 or 4 batches, rotating your mixing bowl as you move your spatula from the center out to the sides. Don’t overmix to avoid deflating the batter—a few streaks of whites are OK.

    Step 4

    Use a large ice cream scoop to fill the paper liners up to the level of your baking tin. Top with equal amounts of berries. Bake the muffins for 30 to 40 minutes, until the tip of a sharp knife comes out clean. Serve warm or at room temperature.

    Yields 12 muffins

Healthy Ingredient Spotlight: Almond Flour

Healthy Ingredient Spotlight

Almond Flour

Almond flour, like other nut flours, is wonderful for baking, whether you’re making muffins, a cake like a dacquoise or torte, cookies, or even pie shells. You can grind your own from fresh almonds or buy it by the bag. Some brands are made of blanched almonds, but those made with the almond skins offer even more nutrients. Like almonds themselves, almond flour is naturally rich in vitamin E and other antioxidants, manganese, and magnesium, with a healthy dose of protein and fiber. To keep it fresh, store it in the fridge or freezer.

Quick Kitchen Nugget: Juicer or Hand Squeezer?

Quick Kitchen Nugget

Juicer or Hand Squeezer?

Woman juicing grapefruit

When a recipe calls for any type of citrus juice, fresh-squeezed is a must. The question then becomes whether to use a hand press or an electric citrus juicer. The answer depends on how much juice you’ll be making. 

For a few tablespoons up to a cup, a metal hand press (look for one with ergonomic handles) will work well with minimal strain on your hands—it does take effort to squeeze its handles together, and you might need different sizes for juicing limes, lemons, and oranges effectively. For juicing large quantities, it pays to have an electric juicer for ease and speed; this countertop appliance can handle all sizes of citrus and can be stored in a cabinet when not needed. There are also large, commercial-grade manual juicers that sit on a flat surface and that you operate by pushing down on a lever to extract the juice, but these tend to take up a lot of counter space.  

For Your Best Health: The Benefits of Limiting Processed and Red Meats

For Your Best Health

The Benefits of Limiting Processed and Red Meats

While many studies have identified links between frequent consumption of processed meat and chronic disease, few have evaluated the impact on multiple health outcomes. Some previous research also suggested that unprocessed red meat may contribute to chronic disease risk, but evidence has been limited.

Now, a team from the University of Edinburgh’s Global Academy of Agriculture and Food Systems, together with researchers from the University of North Carolina, Chapel Hill, has used data from a Centers for Disease Control and Prevention national health survey to create a simulated, representative sample of the US adult population—called a microsimulation—in order to estimate how changes in meat consumption affect adults’ risk of diabetes, cardiovascular disease, colorectal cancer, and death. The effects were evaluated in the overall population and separately based on age, sex, household income, and ethnicity.

This microsimulation is the first to estimate the effects of reducing processed meat and unprocessed red meat consumption, from between 5 percent and 100 percent, on multiple health outcomes in the US. They found that cutting processed meat intake by 30 percent (the equivalent of around 10 slices of bacon a week) would prevent more than 350,000 cases of diabetes and lead to 92,500 fewer cardiovascular disease cases and 53,300 fewer colorectal cancer cases over a decade.

The researchers also analyzed the impacts of reducing unprocessed red meat intake alone and cutting consumption of both processed meat and unprocessed red meat. Cutting unprocessed red meat intake alone by 30 percent, which would mean eating around one less quarter-pound beef burger a week, resulted in more than 732,000 fewer diabetes cases, 291,500 fewer cardiovascular disease cases, and 32,200 fewer colorectal cancer cases. Reducing consumption of both by 30 percent resulted in 1,073,400 fewer diabetes cases, 382,400 fewer cardiovascular disease cases, and 84,400 fewer colorectal cancer cases.

The finding that more disease cases were prevented by reducing unprocessed red meat than by reducing processed meat is partly due to the average daily intake of unprocessed red meat being higher than that of processed meat, at 47 grams a day versus 29 grams a day, respectively. As less is known about the effect of eating unprocessed red meat on chronic disease risk, the team said these estimates should be interpreted with caution and that more research is needed.

Lindsay Jaacks, PhD, professor, Personal Chair of Global Health and Nutrition at the University of Edinburgh, and one of the authors of the study, said, “Cutting consumption of meat has been recommended by national and international organizations to reduce greenhouse gas emissions, including by the Climate Change Committee here in the UK and the United Nations Intergovernmental Panel on Climate Change. Our research finds that these changes in diets could also have significant health benefits in the US, and so this is a clear win-win for people and planet.”

The study, “Estimated effects of reductions in processed meat consumption and unprocessed red meat consumption on occurrences of type 2 diabetes, cardiovascular disease, colorectal cancer, and mortality in the USA: a microsimulation study,” was published in TheLancet Planetary Healthand was funded by the Wellcome Trust.

Fitness Flash: An Exercise Brain Boost That Can Last for Years

Fitness Flash

An Exercise Brain Boost That Can Last for Years

Senior woman running on treadmill

A longitudinal study led by Emeritus Professor Perry Bartlett, PhD, and Daniel Blackmore, PhD, of the University of Queensland’s Queensland Brain Institute found that high-intensity interval exercise improves brain function in healthy older adults for up to five years. The research was published inAging and Disease.

Dr. Bartlett said it is the first controlled study of its kind to show that exercise can not only delay cognitive decline but also boost cognition in healthy older adults. “Six months of high-intensity interval training (HIIT) is enough to flick the switch,” Dr. Bartlett said. “In earlier preclinical work, we discovered exercise can activate stem cells and increase the production of neurons in the hippocampus, improving cognition. In this study, a large cohort of healthy 65- to 85-year-old volunteers joined a six-month exercise program, did biomarker and cognition testing, and had high-resolution brain scans.”

During the study, the researchers assessed the impact of three exercise intensities: low—predominantly motor function, balance, and stretching; medium—brisk walking on a treadmill; and high—four cycles of running on a treadmill at near maximum exertion. Participants exercised three times a week, for between 36 and 45 minutes per session including warmup and cooldown, and under supervision for 6 months. 

Dr. Blackmore said only the high-intensity interval exercise led to cognitive improvement that was retained for up to five years. “On high-resolution MRI scans of that group, we saw structural and connectivity changes in the hippocampus, the area responsible for learning and memory,” he said. “We also found blood biomarkers that changed in correlation to improvements in cognition. Biomarkers can be useful in predicting the effectiveness of the exercise a person is doing.”

Aging is one of the biggest risks for dementia, a condition that affects almost half a million Australians. “If we can change the trajectory of aging and keep people cognitively healthier for longer with a simple intervention like exercise, we can potentially save our community from the enormous personal, economic, and social costs associated with dementia,” Dr. Bartlett said.

With one out of three people aged 85 likely to develop dementia, Dr. Blackmore said, the impact of the research is far-reaching. “Our finding can inform exercise guidelines for older people and further research could assess different types of exercise that could be incorporated. We are now looking at the genetic factors that may regulate a person’s response to exercise to see if we can establish who will and who will not respond to this intervention. The use of biomarkers as a diagnostic tool for exercise also needs further research,” he added. 

Since HIIT has benefits for people of any age, from heart health to a metabolism boost, talk to your doctor or personal trainer about adding it to your exercise regimen.

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