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.
[See Best Diets for Healthy Eating .] When it comes to what kind of plant-based diet one should follow, well, that's where things get complicated. There's not enough evidence to say that a vegan diet, for example, is healthier than eating a mostly plant-based one that includes some meat, experts say.