Why is it so hard to lose that stubborn belly fat?
Body fat comes in two varieties. There’s subcutaneous fat, a noticeable layer of fat that lies just below the skin, and then there’s visceral fat, which is buried beneath the muscles. Visceral fat is the more worrisome variety because it surrounds vital organs and is metabolized by the liver, which turns it into blood cholesterol.
Visceral fat can go largely unnoticed because it’s not visible to the naked eye. In fact, the only effective way researchers can locate visceral fat is by magnetic resonance imaging (MRI), which uses magnetic waves to take a picture of the inside of the abdomen. Researchers can use this picture to estimate the amount of visceral fat a person is carrying.
What Causes Visceral Fat?
Your genetic makeup is between 30% and 60% responsible for the amount of visceral fat you carry. Nevertheless, research shows that both your diet and your level of physical activity contribute to your level of visceral fat. People who consume large amounts of saturated fat and people who perform little or no physical activity are likely to have high stores of visceral fat.
Short of talking a physician into performing an MRI on your abdomen, how do you know how much of this unhealthy fat you have? Check your waistline. A trim waistline is a good indicator that you don’t have a large buildup of visceral fat.
Getting Rid of Visceral Fat
Research shows that people whose diets contain polyunsaturated fats in place of saturated fats have less visceral fat. Polyunsaturated fats are found in high concentrations in sunflower, corn, and soybean oils, as well as in fish. Also, just exercising moderately—doing things such as walking, swimming, or playing tennis—on most days of the week will help you prevent visceral fat from accumulating. What’s even better is that doing regular bouts of vigorous exercise can markedly reduce the amount of visceral fat you already have.
Building muscle—through weight lifting or other resistance exercises—will help, too. Muscle burns calories and helps you maintain your metabolic rate. The more muscle you have, the bigger your body’s engine, and the more likely you will be to burn fat
Once adipocytes get the signal from hormones and release fat into the bloodstream, they shrink just like a balloon that you let air out of. When they shrink, so does your body fat. But if you eat excess fat once you’ve shrunk your adipocytes, chances are it will find its way right back to the adipocyte, and once again you’ll gain fat.
No matter how much physical activity you do, adipocytes never shrink so much that they disappear entirely. Like a balloon that you let all the air out of, you’re always left with some remnant. The only way to totally remove adipocytes from your body is with a surgical procedure such as liposuction or excision. But even with these procedures, if you go back to eating excess fat, you’ll put all the fat back on.
The physical activity recommendation for improving health is to accumulate 30 minutes of moderate-intensity physical activity on most, if not all, days of the week.
Article was taken from http://www.womenfitness.net/visceral_fat.htm
