Study: Low fat potato chips could increase weight gain

In fact, the  research shows that not only will eating foods containing fat substitutes lead to greater calorie consumption and eventually more weight gain, but that these fat substitutes also “reset”  a number of key body mechanisms involved in weight control. So, even when you stop eating them, the weight gain effects can continue.  Synthetic fat substitutes - products like olestra -  are often used in snack foods including crackers, potato chips, cookies and even ice cream.  Since fat substitutes are not digested by the body, they have zero calories.  So, the original idea thought was that by replacing the high-calorie natural fats with a form of fat that is not digested,  calorie consumption - and excess weight - will drop.  Now researchers say there may be a bit more scientific reason behind that  unexpected effect. Indeed, data suggests  that foods with a sweet or “greasy” taste trigger various physiological responses, not only making us salivate (which turns on our appetite) but also impacting the secretions of various hormones and other metabolic reactions.  In other studies Swithers and her team have reported similar findings concerning the use of saccharin and other artificial sweeteners, which appear to not just promote weight gain and but also increase body fat. As such, it may not be a coincidence that the use of artificial sweeteners appears to have risen in direct proportion with the rise in obesity.  Althouh weight gain is a primary concern for most people, it  is not the only reason that these fat substitutes may be bad for your health. In other studies - includingn one conducted by Proctor and Gamble on olestra,  it was learned that this particular fat substitute - even at the very lowest levels of use - also has the ability to pull important nutrients from the body, causing a dramatic depletion of all fat soluble vitamins - including vitamins D and E - in as little as two weeks time.  The researchers on the newly  published study are quick to point out that what happens in rat bodies may not necessarily happen in human bodies - so they don't know for sure if people will react the same way as the lab rats did in their study.   That said, they also indicate that the biological responses to food in rats is very similar to that in humans – meaning there’s a good possibility that the findings will apply to both. 

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