While researching online, the best way to lose weight is to be on a balanced eating plan and exercise routine. The combination of diet and exercise has proven to be successful. There are also many diets on the internet that specialize in losing weight after having a baby. I would start searching and find something that will work for you.
Depends on if you mean as in growing up or after having a baby. If your young ,then you just grow out of it naturally ,hopefully. Now if you mean after a baby, I would say ask your doctor when it is ok to start exercising ,eating less,more for yourself instead of for the baby. In other words depends on what you mean and where your at in your life.