There are three types of fat cells: white, brown and beige. White fat cells store fat. Brown & beige fat cells burn fat. If your goal is to lose weight, you want to increase the number of your brown fat cells and decrease the number of your white fat cells. That's exactly what irisin does: It turns white fat cells into brown fat cells. And those newly created brown fat cells keep burning calories even after exercise is over. Irisin also helps prevent insulin resistance, a condition that leads to Type Two diabetes. This reduces risk of stroke and heart disease.
Eating too few calories prevents white fat from turning brown, while eating just enough to satisfy hunger—prompting the action of the hunger-control neurons—turned white fat to brown. Other research shows that over-consumption increases white fat and also interferes with brown fat's ability to burn calories. Control your portions and eat consciously.
Eat an apple! Ursolic acid, found in apple peels, boosted brown fat in mice—even when they were fed a high-fat diet.
You may have heard that chilling your body activates brown fat burn. A Japanese research team found that half of subjects under age 38 showed signs of brown fat activation in a 66°F setting. Unfortunately, results were less impressive for people older than 38. This does not look like a helpful tool for the general population.
Exercise improves health in an untold number of ways, many of which I have discussed in my blog over that last couple of years. Now we know that exercise releases the hormone irirsin, which helps our bodies burn fat and maintain a healthy weight.
Enjoy Exercise This Week and Savor Your Food