Sunday, October 18, 2009

Don't Drink at all, if you don't have to...

Drinking Your Way to Health? Perhaps Not


Just about every month -- if not every week -- a new study emerges touting the health benefits to be gained from a daily glass of wine or a pint of dark beer.
The benefits related to cardiovascular health have become well-known. A study released in mid-July, for instance, found that moderate alcohol consumption reduces the risk of cardiovascular disease in women by increasing the amount of "good" cholesterol in the bloodstream and reducing blood sugar levels.

But other studies have linked a daily drink, most often wine, to reduced risk of dementia, bone loss and physical disabilities related to old age. Wine also has been found to increase life expectancy and provide potential protection against some forms of cancer, including esophageal cancer and lymphoma.But don't invest in that case of Pinot noir just yet.

Experts with the American Cancer Society and the American Heart Association say that though these studies do show some benefits to moderate drinking, the health risks from alcohol consumption far outweigh the potential rewards.

Drinking any alcohol at all is known to increase your risk for contracting a number of types of cancer, said Susan Gapstur, vice president of epidemiology for the American Cancer Society. These include cancers of the mouth, pharynx, larynx, esophagus, liver, colon/rectum and breast.

"At the end of the day, if you are at very high risk for cancer, you might want to limit your alcohol consumption even further," Gapstur said. "It's a lifestyle modification you can make, and we don't have as many lifestyle modifications for preventing cancer as we do for coronary heart disease."

There also are other health risks from moderate drinking, including liver damage and accidents caused by impaired reflexes, said Dr. Jennifer Mieres, director of nuclear cardiology at the New York University School of Medicine and an American Heart Association spokeswoman.

The health benefits from drinking generally are related to the antioxidants and anti-inflammatories found in red wines and dark beers, Mieres said, but those substances can be found in a number of different fruits and vegetables.
"When it comes to disease prevention, you're better off changing your diet to include fruits and vegetables and get your antioxidants and anti-inflammatories from natural sources," she said.

For example, people can get resveratrol -- the antioxidant found in red wine that's believed to provide most of the drink's health benefits -- from drinking grape juice (cheaper too) just as well as from drinking wine, Mieres said.

"For people that don't drink, not drinking is important," Mieres said. "You can get the same benefits of drinking from leading a heart-healthy lifestyle. To me, it's not worth the risk to start drinking. But for people who enjoy a glass of red wine or enjoy drinking, the key is to stick to the definition of moderation," she said.

Moderate drinking is defined as one drink a day for women and two drinks a day for men. What counts as one drink are:
12 ounces of regular beer or wine cooler
8 ounces of malt liquor
5 ounces of wine
1.5 ounces of 80-proof distilled spirits or liquor


Drinking anything more than that on a daily basis is known to lead to a host of health problems that can reduce your life expectancy, Mieres and Gapstur said.
"I think the take-home message is, if you don't drink, don't start to help protect yourself from coronary heart disease because there are so many other things you can do," Gapstur said. "If you already drink, you might want to limit your consumption."

Though the studies touting the positive health effects of alcohol are scientifically accurate, they also appear to play into people's desires for quick fixes to complex problems, Mieres said.
"To prevent heart disease, 50 percent of the work has to come from you," she said. "Prevention is a big piece, and you have to be accountable. You have to make lifestyle changes, and that's very tough to do. People look for easy ways to get heart-healthy benefits, and drinking is an easy way to do that. It's a known human tendency: Let's find an easy way out that doesn't involve a lot of thought or work."

Monday, March 23, 2009

Red meat raises risk of all kinds of death


 People who eat the most red meat and the most processed meat have the highest overall risk of death from all causes, including heart disease and cancer.

The National Cancer Institute study is one of the largest to look at the highly controversial and emotive issue of whether eating meat is indeed bad for health.

Rashmi Sinha and colleagues looked at the records of more than 500,000 people aged 50 to 71 who filled out questionnaires on their diet and other health habits.

Even when other factors were accounted for -- eating fresh fruits and vegetables, smoking, exercise, obesity -- the heaviest meat-eaters were more likely to die over the next 10 years than the people who ate the least amount of meat.

"Red and processed meat intakes were associated with modest increases in total mortality, cancer mortality, and cardiovascular disease mortality," Sinha and colleagues wrote in the Archives of Internal Medicine.

They divided the volunteers into five groups, called quintiles. Between 1995 and 2005, 47,976 men and 23,276 women died.

The quintile who ate the most red meat had a higher risk for overall death, death from heart disease and cancer than the men and women who ate the least red meat.

The researchers said thousands of deaths could be prevented if people simply ate less meat. "For overall mortality, 11 percent of deaths in men and 16 percent of deaths in women could be prevented if people decreased their red meat consumption to the level of intake in the first quintile," Sinha's team wrote.

HELPING THE ENVIRONMENT

Many studies have shown that people who eat less meat are healthier in many ways, and Sinha's team noted that meat contains several cancer-causing chemicals, as well as the unhealthiest forms of fat.

The U.S. government now recommends a "plant-based diet" that stresses fruits, vegetables and whole grains.

Barry Popkin, an expert in nutrition and economics at the University of North Carolina, said the study was unusually thorough and careful.

Eating less meat has other benefits, he said, and governments should start promoting this. For instance, farming animals for meat causes greenhouse gas emissions that warm the atmosphere and uses fresh water in excess, he said.

"I was pretty surprised when I checked back and went through the data on emissions from animal food and livestock," Popkin said in a telephone interview."I didn't expect it to be more than cars."

Cancer experts said the study fit in with what is known from other research. "This large study provides further evidence to support the recommendations by groups such as the World Cancer Research Fund in demonstrating an association between a high consumption of red and processed meats and a increase risk of death from cancer," said Ian Olver, Chief Executive Officer of Cancer Council Australia.