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The debate over alcohol continues. While drinking alcohol in large amounts is known to cause health problems (e.g., increases risk of cancer), drinking small or moderate amounts is still debated. Some studies say any amount causes harm, but other studies say "not so fast" - moderate drinking is OK and even has benefits (e.g., lower risk of heart attacks and strokes), especially when drunk with a meal.

A recent large study found a benefit to drinking moderate amounts - it is good for cholesterol levels. When nondrinkers started drinking moderately over the course of the study, it raised "good cholesterol" levels and lowered "bad cholesterol" levels. And surprisingly, when moderate drinkers stopped drinking, "bad cholesterol" levels went up and "good cholesterol" levels went down.

"Good cholesterol" is high-density lipoprotein cholesterol or HDL, and "bad cholesterol" is low-density lipoprotein cholesterol or LDL. Changes in cholesterol levels were associated with how much a person started drinking - the more one drank, the better the cholesterol levels. Improvements were better than taking medications! Results with all types of alcohol (wine, beer, spirits) were the same.

From Ars Technica: Large study shows drinking alcohol is good for your cholesterol levels

Drinking alcohol is bad in many ways; raising a glass can raise your risks of various health problems, such as accidental injuries, liver diseases, high blood pressure, and several types of cancers. But, it's not all bad—in fact, it's surprisingly good for your cholesterol levels, according to a study published today in JAMA Network Open. ...continue reading "Drinking Alcohol Is Beneficial For Cholesterol Levels"

A newly published study reviewed 61 studies that looked at daily tree nut consumption on cardiovascular risk factors and found many health benefits. Tree nut (walnuts, almonds, pistachios, macadamia nuts, pecans, cashews, hazelnuts, and Brazil nuts) consumption lowers total cholesterol, LDL cholesterol, triglycerides, and ApoB, the primary protein in LDL cholesterol. It appeared that nut dose is more important than nut type in lowering cholesterol. The beneficial health effects are greater at about 60 grams (about 2 oz or 2 servings) or more nuts consumed per day, but positive health effects are also found at one serving per day. Five studies found that 100 g nuts per day lowered concentrations of LDL cholesterol by up to 35 mg/dL - an effect size comparable to some statin regimens.

Tree nuts are rich in unsaturated fats, soluble fiber, antioxidants, and phytosterols, which produce beneficial effects on serum lipids, blood pressure, and inflammation. Most studies have looked at walnut and almond consumption, but studies found positive benefits for all types of nuts consumed. From Medical Xpress:

Study finds tree nut consumption may lower risk of cardiovascular disease

A new study published in the American Journal of Clinical Nutrition found that consuming tree nuts, such as walnuts, may lower the risk of cardiovascular disease. After conducting a systematic review and meta-analysis of 61 controlled trials, one of the authors, Michael Falk, PhD, Life Sciences Research Organization, found that consuming tree nuts lowers total cholesterol, triglycerides, LDL cholesterol, and ApoB, the primary protein found in LDL cholesterol. These are key factors that are used to evaluate a person's risk of cardiovascular disease. Walnuts were investigated in 21 of the 61 trials, more than any other nut reviewed in this study.

"Our study results further support the growing body of research that tree nuts, such as walnuts, can reduce the risk of cardiovascular diseases," said Dr. Falk. "Tree nuts contain important nutrients such as unsaturated fats, protein, vitamins and minerals. Walnuts are the only nut that provide a significant amount (2.5 grams per one ounce serving) of alpha-linolenic acid (ALA), the plant-based form of omega-3s."

Beyond finding that tree nuts lower total cholesterol, triglycerides, LDL cholesterol and ApoB, researchers also found that consuming at least two servings (two ounces) per day of tree nuts, such as walnuts, has stronger effects on total cholesterol and LDL. Additionally, results showed that tree nut consumption may be particularly important for lowering the risk of heart disease in individuals with type 2 diabetes.

Of 1,301 articles surveyed, 61 trials met eligibility criteria for this systematic review and meta-analysis, totaling 2,582 unique participants. Trials directly provided nuts to the intervention group rather than relying solely on dietary advice to consume nuts. The dose of nuts varied from 5 to 100 g/day and most participants followed their typical diet.