why is wine good for the heart

Red wine, in moderation, has long been thought of as heart healthy. The alcohol and certain substances in red wine called antioxidants may help prevent coronary artery disease, the condition that leads to heart attacks. Any links between red wine and fewer heart attacks aren't completely understood. But part of the benefit might be that antioxidants may increase levels of high-density lipoprotein (HDL) cholesterol (the "good" cholesterol) and protect against cholesterol buildup. While the news about red wine might sound great if you enjoy a glass of red wine with your evening meal, doctors are wary of encouraging anyone to start drinking alcohol, especially if you have a family history of alcohol abuse. Too much alcohol can have many harmful effects on your body. Still, many doctors agree that something in red wine appears to help your heart. It's possible that antioxidants, such as flavonoids or a substance called resveratrol, have heart-healthy benefits. Red wine seems to have heart-healthy benefits. But it's possible that red wine isn't any better than beer, white wine or liquor for heart health. There's still no clear evidence that red wine is better than other forms of alcohol when it comes to possible heart-healthy benefits. Antioxidants in red wine called polyphenols may help protect the lining of blood vessels in your heart. A polyphenol called resveratrol is one substance in red wine that's gotten attention. Resveratrol might be a key ingredient in red wine that helps prevent damage to blood vessels, reduces low-density lipoprotein (LDL) cholesterol (the "bad" cholesterol) and prevents blood clots. Some research shows that resveratrol could be linked to a lower risk of inflammation and blood clotting, which can lead to heart disease.

But other studies found no benefits from resveratrol in preventing heart disease. More research is needed to determine if resveratrol lowers the risk of inflammation and blood clotting. The resveratrol in red wine comes from the skin of grapes used to make wine. Because red wine is fermented with grape skins longer than is white wine, red wine contains more resveratrol. Simply eating grapes, or drinking grape juice, might be one way to get resveratrol without drinking alcohol. Red and purple grape juices may have some of the same heart-healthy benefits of red wine. Other foods that contain some resveratrol include peanuts, blueberries and cranberries. It's not yet known how beneficial eating grapes or other foods might be compared with drinking red wine when it comes to promoting heart health. The amount of resveratrol in food and red wine can vary widely. Resveratrol supplements also are available. Researchers haven't found any harm in taking resveratrol supplements. But your body can't absorb most of the resveratrol in the supplements. Various studies have shown that moderate amounts of all types of alcohol benefit your heart, not just alcohol found in red wine. It's thought that alcohol:
Red wine's potential heart-healthy benefits look promising. Those who drink moderate amounts of alcohol, including red wine, seem to have a lower risk of heart disease. However, it's important to understand that studies comparing moderate drinkers to non-drinkers might overestimate the benefits of moderate drinking because non-drinkers might already have health problems. More research is needed before we know whether red wine is better for your heart than are other forms of alcohol, such as beer or spirits.

Neither the American Heart Association nor the National Heart, Lung, and Blood Institute recommends that you start drinking alcohol just to prevent heart disease. Alcohol can be addictive and can cause or worsen other health problems. Accidents, violence and suicide If you have questions about the benefits and risks of alcohol, talk to your doctor about specific recommendations for you. If you already drink red wine, do so in moderation. For healthy adults, that means: Up to one drink a day for women of all ages. Up to one drink a day for men older than age 65. Up to two drinks a day for men age 65 and younger. The limit for men is higher because men generally weigh more and have more of an enzyme that metabolizes alcohol than women do. 12 ounces (355 milliliters, or mL) of beer 1. 5 ounces (44 mL) of 80-proof distilled spirits Nov. 12, 2016 Original article: June 21, 2010 -- How does drinking red wine manage to keep the cardiologist at bay? Two studies suggest different approaches as to how merlots and cabernet sauvignons and other types of red wine offer -healthy benefits. In the first of two studies published in the July issue of American Journal of Clinical, s cientists at the University of Ulm, Germany, investigated the biological behaviors of in human fat cell biology. Resveratrol is found in the skins of red grapes and has been shown to be a potent biological agent that may offer protection against, and neurodegenerative disorders such as. Researchers hypothesized that resveratrol might decrease obesity by preventing immature fat cells from fully maturing, and also help activate sirtuin 1 (Sirt 1), a protein that protects the heart from inflammation. Laboratory tests conducted in vitro on human cells, in which cells were managed in a control environment, such as a petri dish, showed that resveratrol influenced fat cells' form and function.

Resveratrol blocked immature fat cells from developing and differentiating, which, in turn, affected the fat cells' abilities to function. Several studies have used animals to examine resveratrol's effects, but this is one of the first to use human fat cells. They also found that resveratrol stimulated glucose uptake into human fat cells and blocked molecules from converting into fat. Moreover, resveratrol influenced Sirt1 in a beneficial way and it also affected the secretion of adipokines, fat cells that engage in cell-to-cell communication. The findings indicate that resveratrol might interfere with obesity and other metabolic effects that could increase the risk for. Researchers suggest resveratrol could offer some therapeutic opportunities in the treatment of obesity, which is quite prevalent in the industrialized world. Reducing obesity, a major risk factor for, may also help improve. According to the World Health Organization (WHO), there are 1. 6 billion people age 15 and older who are -- meaning they have a body mass index (BMI) of 25 or higher -- and at least 400 million people who are obese, meaning their BMI is 30 or higher. The WHO projects that in five years there will be 2. 3 billion adults and more than 700 million obese adults. "Our findings open up the new perspective that resveratrol-induced intracellular pathways could be a target for prevention or treatment of obesity-associated endocrine and metabolic adverse effects," the authors write. "Resveratrol may act on different levels of cell signaling. "

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