A landmark clinical trial done in Spain, known by the acronym PREDIMED, continues to support the health benefits of following a Mediterranean-style eating pattern. Last year, PREDIMED researchers reported that Mediterranean-style eating—rich in fruits, vegetables, and healthy plant oils—prevents heart attacks, strokes, and death from heart disease. This week in The Journal of the American Medical Association, they report that a healthy Mediterranean-style diet can also help prevent peripheral artery disease (PAD), a form of “hardening of the arteries.” It’s an important finding, since as many as 12 million Americans have PAD. It can cause leg pain when walking that goes away with rest (called intermittent claudication); a weakening of the aorta, the main pipeline that delivers blood to the body; pain after eating; erectile dysfunction; and other problems.
Diverticulitis, an unpleasant condition that occurs when tiny pouches inside the large intestine become inflamed, can cause intense lower abdominal pain, diarrhea, constipation, a fever, and sometimes a good deal of rectal bleeding. Following a liquid diet for a while can help treat it, but antibiotics, and sometimes even surgery, may be needed. A new study in JAMA suggests that these treatments may be overused.
University of Michigan researchers reviewed the results of 80 studies of diverticulitis and its treatment. While the team agreed that antibiotic use and surgery are sometimes necessary, it concluded that there should be a lesser role for aggressive antibiotic or surgical intervention for chronic or recurrent diverticulitis than was previously thought necessary. Some studies suggest that exercising, controlling weight, and eating a high-fiber diet can prevent diverticular disease. It can also bring relief from constipation, better cholesterol control, and make for more filling meals. Adults should get 25 to 30 grams of dietary fiber every day. It’s best to get it from high-fiber foods, such as beans, whole grains, vegetables, and fruits. Some people need a fiber supplement.
Could tea be a health beverage? Eleven new studies in the American Journal of Clinical Nutrition highlight the many ways that tea may improve health: Tea drinking appears to lower the risk for heart disease and stroke, may strengthen bones, and appears to improve mood, concentration, and performance. Natural compounds called polyphenols in tea might protect against several cancers, including those of the prostate, GI tract, lungs, breast, and skin, and may also increase metabolism and promote weight loss. Those possible benefits apply to tea, not tea extracts condensed into pills. If you’re a tea drinker, enjoy your favorite brew with the added satisfaction that it may be good for your health. If you aren’t, there’s no reason to start.
Move over, apples: A handful of nuts a day keeps the doctor away—and might help you live longer, according to new results from two long-running studies. Writing in tomorrow’s New England Journal of Medicine, Harvard researchers showed that daily nut-eaters were less likely to die from cancer, heart disease, and respiratory disease. Overall, the daily nut-eaters were 20% less likely to have died during the course of the study than those who avoided nuts. (Peanuts, which are actually legumes, counted as nuts in this study). While everybody is searching for the perfect nut, the health benefits hold true for variety of nuts.
Trans fats, once seen as harmless additives that ended up in everything from Twinkies to French fries, are finally getting the reputation they deserve—bad for health. For years, the FDA has labeled trans fats as “generally recognized as safe.” That term applies to substances added to foods that experts consider safe, and so can be used without testing or approval. Yesterday the FDA proposed removing trans fats from the generally recognized as safe list, a step that would eliminate artificial trans fats from the American food supply. Oils rich in trans fats, long a workhorse of the food industry, boost harmful LDL cholesterol. They also depress protective HDL, which trucks LDL to the liver for disposal; have unhealthy effects on triglycerides; make blood platelets more likely to form artery-blocking clots in the heart, brain, and elsewhere; and feed inflammation, which plays key roles in the development of heart disease, stroke, and diabetes.
It’s been a big year for the Mediterranean diet. Convincing evidence published in 2013 has shown that this kind of eating pattern is effective at warding off heart attack, stroke, and premature death. While you probably get the biggest payoff by adopting such a diet early in life, a new study shows that doing it during midlife is good, too. In the study, women who followed a healthy diet during middle age were about 40% more likely to live past the age of 70 without chronic illness and without physical or mental problems than those with less-healthy diets. The healthiest women were those who ate more plant foods, whole grains, and fish; ate less red and processed meats; and had limited alcohol intake. That’s typical of a Mediterranean-type diet, which is also rich in olive oil and nuts.
Millions of baseball fans will tune in tonight for the opening game of the World Series. Boston Red Sox versus St. Louis Cardinals. Sportswriters are saying it will be an interesting series between two well-matched teams. Football fans have it easy. They have to sit through just one big game to decide the year’s champion. For us baseball fans, it could take seven games spread over nine days to determine this year’s champion. That means fans need to approach the series as a marathon, not a sprint. Pay attention to sleep, exercise, food, alcohol, and emotions. The Red Sox and Cardinals are two very likable teams. Commentators point out that these guys play the game the “right way.” The players themselves say it’s going to be fun. Let’s see if we fans can remember that baseball is a game. This World Series should be fun to watch. Whoever you’re rooting for, have fun watching.
Carrying too many pounds is a solid signal of current or future health problems. But not for everyone. Some people who are overweight or obese mange to escape the usual hazards, at least temporarily. This weight subgroup has even earned its own moniker—metabolically healthy obesity. Most people who are overweight or obese show potentially unhealthy changes in metabolism, like high blood pressure, high cholesterol, and insulin resistance. But some people who are overweight or obese manage to avoid these changes and, at least metabolically, look like individuals with healthy weights. Such individuals have near-normal waist sizes, blood pressure, cholesterol, and blood sugar, as well as good physical fitness. Metabolically healthy obesity isn’t common. And it may not be permanent.
For many people, a late-night “snack” is a daily habit. There are two types of nighttime eating disorders. Sleep-related eating disorder is a highly-publicized though uncommon malady. People with this problem eat while sleepwalking or while in a twilight state between sleep and wakefulness. A better-documented problem is night eating syndrome, in which people do the majority of their eating late at night. It may affect 1 or 2 out of 100 people in the general population. Sleeping and eating are almost certainly connected, given the link between lack of sleep and weight gain. So getting plenty of sleep may be a helpful substitute for nighttime trips to the refrigerator. Being mindful of the problem and trying to identify its triggers, or stress-reduction techniques, may help avert trips to the refrigerator. Some people benefit from talk therapy.
News out of Seattle is sure to fuel confusion about fish oil supplements. A study by scientists at the Fred Hutchinson Cancer Research Center in Seattle linked eating a lot of oily fish or taking potent fish oil supplements to a 43% increased risk for prostate cancer overall, and a 71% increased risk for aggressive prostate cancer. Fish oil loaded with omega-3 fatty acids, which play important roles in health. Deficiencies in them have been linked to a variety of health problems, including cardiovascular disease, some cancers, mood disorders, arthritis, and more. But that doesn’t mean taking high doses translates to better health and disease prevention. Despite this one study, you should still consider eating fish and other seafood as a healthy strategy. Twice a week is a good goal.