New research suggests that the common way doctors measure a healthy weight, called Body Mass Index (BMI), may not be the best tool for figuring out a person's risk for cancer. Instead, the study found that where a person carries their extra fat, especially fat around the stomach, is a much more important clue. A new study published in the Journal of the National Cancer Institute, found that belly fat plays a big role, not just in our general health but also in cancer. However, how does fat around your mid-section define this? Where Your Fat Sits May Be Key For many years, doctors have used BMI (which is calculated from your height and weight) to see if someone is overweight or obese and then use that status to estimate their risk for various cancers. However, this new study found that relying only on BMI is too basic. The research suggests that the location of extra fat on your body might be just as important, if not more so, in deciding whether your risk of developing several types of cancer goes up or down. How Belly Fat Increases Risk Of Cancer The study used advanced methods to look at the relationship between fat in five different areas of the body and the risk for 12 common cancers linked to being overweight. The clearest and most alarming finding was that fat around the abdomen (belly fat) was the most dangerous type of fat: Increased Risk Belly fat was directly linked to a higher chance of developing three specific cancers: endometrial cancer (of the uterus), esophageal cancer (in the food pipe), and liver cancer. Worse Health Marker Doctors pointed out that carrying fat in the center of your body is already known to cause problems like diabetes and heart disease. They believe this is because central fat causes a lot of inflammation inside the body, and this inflammation is what can actually encourage cancer to grow. Are There Benefits Of Having Belly Fat? While fat around the stomach was dangerous, the researchers made a surprising discovery about lower body fat. They found that fat carried in the buttocks and thighs actually seemed to help protect against cancer. This fat was linked to a reduced risk of both breast cancer and a type of brain tumor called meningioma. This unexpected result has led some experts to think that the fat cells in the lower body might produce helpful hormones that fight against cancer. Why BMI Isn't Enough This research strongly confirms that doctors shouldn't just rely on the single BMI number. As one cancer doctor noted, BMI is a "quick and dirty" measurement that only gives a very basic picture of your health; the location of excess fat matters much more. Scientists believe fat increases cancer risk in a few ways, including: Producing extra hormones like estrogen and insulin, which are known to fuel the growth of many cancer types.Creating a state of chronic inflammation in the body, which helps tumors get started and grow.The study concludes that future health plans, both for treating obesity and preventing cancer, should focus on measuring and managing where fat is distributed rather than just focusing on overall weight. While losing weight is still beneficial, the body part where the fat is concentrated is a powerful indicator of risk.
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