Physical activity increases hunger and food consumption, which leads to more stored fat. People also increase stored fat when they consume foods with high fructose corn syrup, soy, and other “obesogens.”
Stephen Perrine and Heather Hurlock, authors of The New American Diet: How secret ‘obesogens’ are making us fat, say people are often unable to lose weight because of chemical toxins in the body. Therefore, in spite of a low-calorie, healthy diet, exposure to toxins can lead to excess body fat. Whether toxins are chemical (e.g. chlorine) or natural (e.g. harmful bacteria), the book says they disrupt normal biochemical processes that promote 1) fat burning, 2) reduced appetite and 3) fewer, smaller fat cells. research chemicals Unfortunately, many Americans blame weight gain on eating too many calories and getting too little exercise. However, scientist are discovering that man-made chemicals as well as some natural ones (e.g. soy), disrupt the endocrine system, leading to biochemical processes that increase the number of fat cells (even in adults), decrease the body’s ability to burn fat, and increase appetite.
Mr. Perrine and Ms. Hurlock wrote that oesogens are found everywhere, particularly because the obesogen, high fructose corn syrup, is found in most processed foods. Fructose (even when obtained through fruit), can instigate metabolic disorders that damage the liver, and disturb the normal functioning of the appetite-suppressing Leptin hormone levels.
The contribution of chemical and natural toxins to America’s skyrocketing obesity epidemic has largely been ignored by the weight loss industry. Instead, the industry claims exercise is important for the elimination of excess body fat. In fact, inactivity reduces appetite, which leads to less stored fat. According to Good Calories, Bad Calories, a book by Science Journalist Gary Taubes, 100 years of scientific studies have shown exercise has almost no effect on weight. Two recent “exercise” studies described below have come to the same conclusion.
The Sept. 29, 2009 edition of the British Journal of Sports Medicine published a study that showed weeks of strenuous exercise led to participants losing only about 3.5 pounds while the average weight loss was just a little more than seven pounds. The study involved 58 obese people who completed 12 weeks of supervised aerobic training without changing their diets.
An exercise-weight loss study by the University of Colorado School of Medicine investigated whether study subjects would burn extra fat calories after exercising, a phenomenon that some exercisers (and even more diet and fitness books) call “afterburn.” The University’s researchers found study subjects did not burn additional body fat on the day when they exercised. The study found that inactivity leads to reduced food consumption and thus, less stored fat. The study was published Oct. 15, 2009 in the Journal of Applied Physiology.
Though the studies spanning decades show exercise has little effect on weight in the absence of dietary changes, all of the studies showed improved health benefits, particularly involving the heart and mental state. Ironically, the School of Medicine’s researchers found that a low-intensity exercise session burns a higher percentage of fat calories than a high-intensity one.