Whether moderate drinking is healthy has also been a subject of controversy. Many studies show that cardiovascular health benefits are associated with moderate beer or wine drinking (which has been of particular interest lately with reservatrol in the news so much), while other studies show improved insulin sensitivity. Some experts however, say that alcohol has no place in a fitness lifestyle.

A recent study published in the journal Obesity adds new findings to our knowledge about alcohol, insulin resistance and abdominal obesity. Analysis of the results as compared to other studies also gives us some insights into why some people seem to drink and get fat while others seem to drink and get thin!

The truth about the beer belly phenomenon

This new study, by Ulf Riserus and Erik Inglesson, was based on the Swedish Uppsala Longitudinal cohort. The researchers found that alcohol intake in older men did not improve insulin sensitivity, which contradicted their own hypothesis and numerous previous studies.

They also said there was a very “robust” association between alcohol intake, waist circumference and waist to hip ratio. They pointed out that a high alcohol intake, especially hard liquor, was closely associated with abdominal body fat, not just overall body mass.

Abdominal fat accumulation is not just a cosmetic problem, it can be a serious health risk. Abdominal fat, also known as “android” or “central” obesity, increases the risk for cardiovascular disease, high blood pressure, high blood lipids, glucose intolerance and elevated insulin levels.

Many other studies have also found a link between alcohol intake and abdominal fat, but this too has been controversial. A study that was widely publicized by the BBC in 2003 dismissed the concept of the “beer belly.”

Nevertheless, it looks like there’s some scientific support to it after all (or at least a “liquor belly” according to this newer study).

Hormones may be strongly involved because high alcohol intake has been shown to decrease blood testosterone in men, and also increase cortisol levels, which can lead to visceral fat accumulation.

Why is there so much controversy? Why the discrepancy in research findings about alcohol’s influence on obesity, abdominal fat, and insulin sensitivity?

Well, here’s the real story of why some people don’t get fat when they drink:

A lot of the confusion is because epidemiological research cannot show cause and effect relationships and mistakes can easily be made when drawing associations based on limited data.

source: http://www.articlesbase.com