Tuesday, February 9, 2010

Health And Harm Within Your Guts

People who drink at least two sugary sodas a week have an increased risk of developing cancer of the pancreas, and researchers suspect the culprit is sugar, a Chinese study shows.

Analyses of data collected on 60,524 Singapore Chinese adults showed that people who drank two or more sugar-sweetened soft drinks a week were at greater risk of developing pancreatic cancer compared with individuals who did not. And don't expect that the subjects volunteered either - it is China. No link was found between drinking juice and pancreatic cancer, one of the most rapidly fatal cancers in adults (less than 5% of patients surviving five years or more after being diagnosed). A typical serving of soda is 20 ounces and contains 65 grams of sugar. By comparison, a typical serving of orange juice is eight ounces and contains 21 grams of sugar.

The study was the first to look at the role fizzy drinks and juice play in the development of pancreatic cancer in Asians, whose diet and lifestyle are becoming more and more Western, the study says. Previous studies had looked at Europeans and Americans. Participants in the study who consumed two or more sodas per week tended to be younger men who smoke, drink alcohol, eat higher-calorie diets and are less physically active. They also ate more red meat.

The findings of the study were adjusted for other dietary factors which have been linked with pancreatic cancer. "But the adjustments did not change the link between soda and the risk of pancreas cancer," according to one of the authors of the study. "We suspect sugar is the culprit, but we cannot prove it from this study," adding that the researchers only looked at carbonated sugar-sweetened beverages, not sports drinks or diet soft drinks.

Hmmm, they didn't accomplish much. First the non-story about "hacking", now this not-so-telling study about people with already suspect health habits having some soda. What next..drinking beer can be good for your health? Wait, really?

A new analysis of 100 commercial beers shows the beverage is a significant source of dietary silicon, a key ingredient for bone health. Past research has suggested beer is chock full of silicon, but little was known about how silicon levels varied with the type of beer and malting process used until the current study. The silicon content of the beers ranged from 6.4 mg/L to 56.5 mg/L, with an average of 30 mg/L. Two beers are the equivalent of just under a half liter, so a person could get 30 mg of the nutrient from two beers. And while there is no official recommendation for daily silicon uptake, individuals in the U.S. consume between 20 and 50 mg of silicon each day - which other studies show may be, overall, bad for health.

The silicon levels of beer types, on average:

Indian Pale Ale (IPA): 41.2 mg/L
Ales: 32.8 mg/L
Pale Ale: 36.5 mg/L
Sorghum: 27.3 mg/L
Lagers: 23.7 mg/L
Wheat: 18.9 mg/L
Light lagers: 17.2 mg/L
Non Alcoholic: 16.3 mg/L

Their research showed the malting process didn't affect barley's silicon content, which is mostly in the grain's husk. However, pale-colored malts had more silicon than the darker products, such as the chocolate, roasted barley and black malt, which all have substantial roasting. The scientists aren't sure why these darker malts have less silicon than other malts. Hops were the stars of the beer ingredients, showing as much as four times more silicon than was found in malt. The downside: Hops make up a much smaller portion of beer compared with grain. Some beers, such as IPAs are hoppier, while wheat beers tend to have fewer hops than other brews, the researchers say.

The type of silicon in beer, called orthosilicic acid, has a 50% bioavailability, meaning that much is available for use in the body. Some foods, like bananas are rich in silicon but only 5% is bioavailable. This soluble form of silica found in beer could be important for the growth and development of bone and connective tissue, according to the National Institutes of Health. Past research has suggested that moderate beer consumption may help fight osteoporosis, a disease characterized by low bone mass and deterioration of bone tissue. Another past study involving nearly 1,700 women showed participants who were light to moderate beer drinkers had much better bone density than non-drinkers. And also more fun at parties. The researchers suggested the beer's plant hormones, not the alcohol, could be responsible for the bone boost. But, hey, whatever makes talking to girls in social situations easier...

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