plant foods Archives - Amazing Health Advances

Eating Blueberries Benefits Mood and Mobility

AHA Publisher — Fri, 02 Dec 2022 08:00:39 +0000

Michael Greger M.D. FACLM via Nutrition Facts – The consumption of berries can enhance “beneficial signaling in the brain.” Plant foods are our primary source of antioxidant and anti-inflammatory compounds, but some plant foods may be better than others. As I’ve explored before, a randomized, double-blind, placebo-controlled trial showed us that one cup of blueberries a day can improve cognition among older adults, and the same happens in children after just a single meal with blueberries, though two cups of berries may work better than one. As I discuss in my video Benefits of Blueberries for Mood and Mobility, that single hit of berries may also improve mood. In a double-blind, placebo-controlled, crossover study, young subjects were asked a series of questions, such as Are you very slightly or not at all, a little, moderately, quite a bit, or extremely interested? Excited? Strong? Ashamed? And so on. As you can see in the graph below and at 0:55 in my video, before and after drinking the placebo, there was no significant change in young adult participants aged 18 through 21. But, two hours after consuming about two cups of blueberries, their positive mood scores improved significantly. They felt more enthusiastic, alert, inspired, and attentive. The same results were found in seven- to ten-year-old children. Benefits achieved not with some dangerous new mood-enhancing drug or Ritalin, but blueberries—and after just a single meal. Now, blueberries can’t do everything. Although a cup of berries certainly appears to improve brain function, no improvements in walking (gait) or balance were observed. What if you tried two cups of blueberries a day?Might six weeks of two cups of frozen blueberries a day affect the functional mobility in adults over age 60? Study participants were randomized to prepackaged blueberries or prepackaged carrot juice as a control, and researchers measured tasks, including one where “two bright yellow ropes on the floor outlined the narrow path, and participants were instructed to walk within the roped path.” The blueberries beat out the carrot juice control, and significant improvements suggest “blueberry supplementation may provide an effective countermeasure to age-related declines in functional mobility…” In retrospect, the researchers thought perhaps the control should have been “a true placebo (e.g., cucumber powder) without antioxidant properties,” since the carrots themselves may have offered some benefit, too. Had they used a different control, the blueberry results may have been even more impressive. “Overall, this study demonstrates the need for greater exploration of blueberry supplementation as a nonpharmacologic countermeasure to the public health issue of age-related declines in functional mobility and independence.” Or, to use the punnier version, “dietary interventions with polyphenol-rich [phytonutrient-rich] foods, such as blueberries, present a potentially fruitfulstrategy for combating some of the deleterious effects of age-related neurodegeneration.” (Emphasis added.) Isn’t science grand! I love that these studies were conducted. The video I referred to is Flashback Friday: Benefits of Blueberries for the Brain. Key Takeaways Plant foods are our primary source of antioxidants and anti-inflammatory compounds. Blueberries can not only improve cognition, but also our mood. One daily cup of blueberries improved cognition in older adults, and one to two cups a day did the same in children. Two hours after consuming about two cups of blueberries, young adults and younger children experienced improved positive moods, such as feeling more enthusiastic, inspired, alert, and attentive. Researchers investigated the effects of six weeks of two cups of frozen blueberries a day in adults over 60 and found they had significant improvements in functional mobility, such as walking on a roped-off, narrow path. Dietary interventions with phytonutrient-rich foods like blueberries may be effective for countering some age-related effects on functional mobility, independence, and neurodegeneration. To read the original article click here.

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From Coffee to Dark Chocolate, the Many Health Benefits of Polyphenols: ‘Dramatic Anti-Cancer Effects’

AHA Publisher — Thu, 21 Oct 2021 07:00:55 +0000

Lori Johnson via CBN News – This year marked the first-ever national Polyphenol Day, a day set aside to recognize one of nature’s healthiest nutrients. Polyphenols, found in certain plant foods are considered very good for the body because of the protection they provide from damage that often comes with aging. In addition to fighting the many negative effects of aging, research shows these compounds can also reduce the risk of heart disease and other leading causes of death. Dr. Steven Gundry, a leading cardiovascular surgeon who specializes in nutrition and the treatment of elderly patients, told CBN News he recommends a diet rich in polyphenols. “Some of these compounds are now recognized as having dramatic anti-cancer effects,” he said. “And I actually use the power of polyphenols in most of my clinic for the active treatment of people with cancer, metastatic cancer, who are inoperable.” In fact, Dr. Gundry pushed the designation of national Polyphenol Day to build interest and knowledge. He said people can find these compounds in their local grocery store if they know what to look for. He says many foods containing polyphenols can be found in the produce department or the frozen food section. “Right now blackberries and raspberries have the highest polyphenol content of any of the berries, that’s followed by strawberries,” he explained. “Traditionally we’ve always thought of blueberries as a great source of polyphenols, but blueberries have actually been bred for sugar content so now blueberries are a little bit down the scale of where you’d find polyphenols. The exception is if you find wild blueberries or tiny blueberries.” Dr. Gundry says when shopping, make sure to go to the aisle where olive oil can be found. It contains high amounts of polyphenols. However, since there are so many different brands, choosing the right olive oil can be confusing. “The more bitter olive oil, the kind that makes you cough, or kind of burns, that’s a sign of the polyphenol content,” he said. Believe it or not, Dr. Gundry says polyphenol-rich foods can be found in the candy aisle in the form of dark chocolate. Like olive oil, Dr. Gundry says the more bitter the better. That means choosing one with the highest percentage of cacao. “Extra dark chocolate has tons of polyphenols. But beware: milk chocolate, which is preferred by Americans, all the polyphenols have been taken out to make it taste good,” he said. Black coffee also does more than give you a morning pick-up, explains Dr. Gundy. “A fascinating study shows people who drink five or more cups of coffee per day have a very low incidence of Alzheimer’s or Parkinson’s,” he said. “And it turns out it’s the polyphenols that have that benefit.” Some, but not all, teas also score high. “And it really doesn’t matter whether it’s green tea or black tea, but herbal teas aren’t loaded with polyphenols,” he said. Dr. Gundry recommends using spices liberally because most of them, even ordinary black pepper, can help. “Sprinkle them on your salad, on your fish, your chicken,” he said. “You can get polyphenols every day without worrying about it.” By increasing the consumption of polyphenols in foods and beverages, spices, and supplements, research shows we can lower our risk of disease. To read the original article click here.

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Eating More Plant Foods May Lower Heart Disease Risk in Young Adults, Older Women

AHA Publisher — Thu, 05 Aug 2021 07:12:34 +0000

American Heart Association (AHA) via Newswise – Eating more nutritious, plant-based foods is heart-healthy at any age, according to two research studies published today in the Journal of the American Heart Association, an open access journal of the American Heart Association. In two separate studies analyzing different measures of healthy plant food consumption, researchers found that both young adults and postmenopausal women had fewer heart attacks and were less likely to develop cardiovascular disease when they ate more healthy plant foods. The American Heart Association Diet and Lifestyle Recommendations suggest an overall healthy dietary pattern that emphasizes a variety of fruits and vegetables, whole grains, low-fat dairy products, skinless poultry and fish, nuts and legumes and non-tropical vegetable oils. It also advises limited consumption of saturated fat, trans fat, sodium, red meat, sweets and sugary drinks. One study, titled “A Plant-Centered Diet and Risk of Incident Cardiovascular Disease during Young to Middle Adulthood,” evaluated whether long-term consumption of a plant-centered diet and a shift toward a plant-centered diet starting in young adulthood are associated with a lower risk of cardiovascular disease in midlife. “Earlier research was focused on single nutrients or single foods, yet there is little data about a plant-centered diet and the long-term risk of cardiovascular disease,” said Yuni Choi, Ph.D., lead author of the young adult study and a postdoctoral researcher in the division of epidemiology and community health at the University of Minnesota School of Public Health in Minneapolis. Choi and colleagues examined diet and the occurrence of heart disease in 4,946 adults enrolled in the Coronary Artery Risk Development in Young Adults (CARDIA) study. Participants were 18- to 30-years-old at the time of enrollment (1985-1986) in this study and were free of cardiovascular disease at that time. Participants included 2,509 Black adults and 2,437 white adults (54.9% women overall) who were also analyzed by education level (equivalent to more than high school vs. high school or less). Participants had eight follow-up exams from 1987-88 to 2015-16 that included lab tests, physical measurements, medical histories and assessment of lifestyle factors. Unlike randomized controlled trials, participants were not instructed to eat certain things and were not told their scores on the diet measures, so the researchers could collect unbiased, long-term habitual diet data. After detailed diet history interviews, the quality of the participants diets was scored based on the A Priori Diet Quality Score (APDQS) composed of 46 food groups at years 0, 7 and 20 of the study. The food groups were classified into beneficial foods (such as fruits, vegetables, beans, nuts and whole grains); adverse foods (such as fried potatoes, high-fat red meat, salty snacks, pastries and soft drinks); and neutral foods (such as potatoes, refined grains, lean meats and shellfish) based on their known association with cardiovascular disease. Participants who received higher scores ate a variety of beneficial foods, while people who had lower scores ate more adverse foods. Overall, higher values correspond to a nutritionally rich, plant-centered diet. “As opposed to existing diet quality scores that are usually based on small numbers of food groups, APDQS is explicit in capturing the overall quality of diet using 46 individual food groups, describing the whole diet that the general population commonly consumes. Our scoring is very comprehensive, and it has many similarities with diets like the Dietary Guidelines for Americans Healthy Eating Index (from the U.S. Department of Agriculture’s Food and Nutrition Service), the DASH (Dietary Approaches to Stop Hypertension) diet and the Mediterranean diet,“ said David E. Jacobs Jr., Ph.D., senior author of the study and Mayo Professor of Public Health in the division of epidemiology and community health at the University of Minnesota School of Public Health in Minneapolis. Researchers found: During 32 years of follow-up, 289 of the participants developed cardiovascular disease (including heart attack, stroke, heart failure, heart-related chest pain or clogged arteries anywhere in the body). People who scored in the top 20% on the long-term diet quality score (meaning they ate the most nutritionally rich plant foods and fewer adversely rated animal products) were 52% less likely to develop cardiovascular disease, after considering several factors (including age, sex, race, average caloric consumption, education, parental history of heart disease, smoking and average physical activity). In addition, between year 7 and 20 of the study when participants ages ranged from 25 to 50, those who improved their diet quality the most (eating more beneficial plant foods and fewer adversely rated animal products) were 61% less likely to develop subsequent cardiovascular disease, in comparison to the participants whose diet quality declined the most during that time. There were few vegetarians among the participants, so the study was not able to assess the possible benefits of a strict vegetarian diet, which excludes all animal products, including meat, dairy and eggs. “A nutritionally rich, plant-centered diet is beneficial for cardiovascular health. A plant-centered diet is not necessarily vegetarian,” Choi said. “People can choose among plant foods that are as close to natural as possible, not highly processed. We think that individuals can include animal products in moderation from time to time, such as non-fried poultry, non-fried fish, eggs and low-fat dairy.” Because this study is observational, it cannot prove a cause-and-effect relationship between diet and heart disease. Other co-authors are Nicole Larson, Ph.D.; Lyn M. Steffen, Ph.D.; Pamela J. Schreiner, Ph.D.; Daniel D. Gallaher, Ph.D.; Daniel A. Duprez, M.D., Ph.D.; James M. Shikany, Dr.P.H.; and Jamal S. Rana, M.D., Ph.D. The study was funded by the National Heart, Lung and Blood Institute of the National Institutes of Health; Healthy Food Healthy Lives Institute at the University of Minnesota; and the MnDrive Global Food Ventures Professional Development Program at the University of Minnesota. In another study, “Relationship Between a Plant-Based Dietary Portfolio and Risk of Cardiovascular Disease: Findings from the Women’s Health Initiative (WHI) Prospective Cohort Study,” researchers, in collaboration with WHI investigators led by Simin Liu, M.D., Ph.D., at Brown University, evaluated whether or not diets that included a dietary portfolio of plant-based foods with U.S. Food and Drug Administration-approved health claims for lowering “bad” cholesterol levels (known as the “Portfolio Diet”) were associated with fewer cardiovascular disease events in a large group of postmenopausal women. The “Portfolio Diet” includes nuts; plant protein from soy, beans or tofu; viscous soluble fiber from oats, barley, okra, eggplant, oranges, apples and berries; plant sterols from enriched foods and monounsaturated fats found in olive and canola oil and avocadoes; along with limited consumption of saturated fats and dietary cholesterol. Previously, two randomized trials demonstrated that reaching high target levels of foods included in the Portfolio Diet resulted in significant lowering of “bad” cholesterol or low-density lipoprotein cholesterol (LDL-C), more so than a traditional low-saturated-fat National Cholesterol and Education Program diet in one study and on par with taking a cholesterol-lowering statin medication in another. The study analyzed whether postmenopausal women who followed the Portfolio Diet experienced fewer heart disease events. The study included 123,330 women in the U.S. who participated in the Women’s Health Initiative, a long-term national study looking at risk factors, prevention and early detection of serious health conditions in postmenopausal women. When the women in this analysis enrolled in the study between 1993 and 1998, they were between 50-79 years old (average age of 62) and did not have cardiovascular disease. The study group was followed until 2017 (average follow-up time of 15.3 years). Researchers used self-reported food-frequency questionnaires data to score each woman on adherence to the Portfolio Diet. The researchers found: Compared to women who followed the Portfolio Diet less frequently, those with the closest alignment were 11% less likely to develop any type of cardiovascular disease, 14% less likely to develop coronary heart disease and 17% less likely to develop heart failure. There was no association between following the Portfolio Diet more closely and the occurrence of stroke or atrial fibrillation. “These results present an important opportunity, as there is still room for people to incorporate more cholesterol-lowering plant foods into their diets. With even greater adherence to the Portfolio dietary pattern, one would expect an association with even less cardiovascular events, perhaps as much as cholesterol-lowering medications. Still, an 11% reduction is clinically meaningful and would meet anyone’s minimum threshold for a benefit. The results indicate the Portfolio Diet yields heart-health benefits,” said John Sievenpiper, M.D., Ph.D., senior author of the study at St. Michael’s Hospital, a site of Unity Health Toronto in Ontario, Canada, and associate professor of nutritional sciences and medicine at the University of Toronto. The researchers believe the results highlight possible opportunities to lower heart disease by encouraging people to consume more foods in the Portfolio Diet. “We also found a dose response in our study, meaning that you can start small, adding one component of the Portfolio Diet at a time, and gain more heart-health benefits as you add more components,” said Andrea J. Glenn, M.Sc., R.D., lead author of the study and a doctoral student at St. Michael’s Hospital in Toronto and in nutritional sciences at the University of Toronto. Although the study was observational and cannot directly establish a cause-and-effect relation between diet and cardiovascular events, researchers feel it provides a most reliable estimate for the diet-heart relation to-date due to its study design (included well-validated food frequency questionnaires administered at baseline and year three in a large population of highly dedicated participants). Nevertheless, the investigators report that these findings need to be further investigated in additional populations of men or younger women. To read the original article click here.

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