FAT DISTRIBUTION AND HEALTH
Posted: under Weight Loss.
The apple shape has been found to be much more potentially dangerous with respect to health than the pear shape, because the fat cells around the abdomen release their fat into the bloodstream more readily than other fat cells. A ‘pot belly therefore—irrespective of total body mass—is likely to be more atherogenic (i.e. cause narrowing of the arteries), diabetogenic (i.e. cause diabetes) and possibly carcinogenic (i.e. cause cancer). In contrast, pear-shaped women have been found to have little increased illness risk (with the possible exception of a slight increase in the risk of varicose veins and arthritis). In health terms therefore, it’s not if someone is fat, but where they are fat that is important—filling up of the fat cells around the waist (as is characteristic of men) is much more dangerous than filling up of fat cells on the lower body (as is more characteristic of women).
There is another important form of fat storage which is now thought to be most important as a predictor of ill-health. Visceral fat (sometimes called ‘intra-abdominal fat’), surrounds the organs or ‘viscera’ of the body, such as the stomach, liver and kidneys etc. Visceral fat is thought to be dangerous because it ‘gives up’ its fat into the portal circulation in the bloodstream, which passes through the liver first. This has a variety of metabolic consequences such as increasing the liver’s production of fat particles and inducing resistance to the effects of the hormone insulin.
Visceral fat can only be seen using special medical imaging techniques but it is also highly correlated with total abdominal fat. In other words, someone with a ‘pot belly’ is more likely to have large visceral fat stores than someone who has a low level of total abdominal fat—although it is still possible for relatively lean people to have quite high visceral fat levels, possibly due again to genetic factors. Visceral fat has recently been explained by health researchers as being the best predictor of health risk. It’s likely that in the future measures will be developed to screen for this in health check-ups, just as screening for blood cholesterol is done now.
The health risks of fat shapes combines both BMI (body mass index) and WHR (waist-to-hip ratio) measures. As can be seen, it’s not just the big person who is at risk. A small person with large abdominal fat stores (i.e. a ‘pot belly’ is also at risk).
Myth-information . Although there are identified body fat shapes with varying health risks, there is no evidence that specific diets have special effects for any one particular body shape, hence there is no support for a ‘body shape’ diet.
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