There is no word for being late. Losing weight when you enter 40 years of age can still be done. At a maximum age of 40 years, there are many changes in your body that are never unexpected. Collagen levels in facial skin that are increasingly decreasing, decreasing elasticity, your body movements are slower, your metabolic abilities are decreased. All of these things will eventually lead to weight gain. If not treated seriously, weight gain in someone who has turned 40 can be dangerous. At the age of 40 is the right time to understand your body better.