Losing that excess weight is widely agreed to be a good strategy for improving your general health and lengthening your life (by reducing your risk of early onset of many aging conditions). As this MSNBC article points out, however, the weight loss industry is rife with deceptive practices, scams and misinformation. Always, always do your research carefully before adopting a weight loss strategy. While you're researching, you should take a look at calorie restriction diets as an option. It's the only proven, available way to extend your healthy lifespan at this time.