In vertebrates, the immune system is considered the last line of defense against foreign invaders.It fights by destroying pathogens and tumor cells using mechanisms that constantly adapt to recognize and rid these disease causing cells.
Which is Better for Weight Loss? Some studies have found that low-carb diets are more effective for weight loss and fat loss than low-fat diets. A study published in 2014 in Annals of Internal Medicine showed that this was the case, even after a period of 12 months.
Best Heart-Healthy Diets. Being overweight is just one factor that puts people at risk for heart disease and stroke. A heart-healthy diet can help you lose weight or lower cholesterol, blood pressure or triglycerides. According to experts who rated the 38 diets below, the Ornish Diet is the most heart-healthy. Read the Best Diets methodology.