When you cook, start replacing white sugar with honey or brown sugar. Find other natural sweets to satisfy your cravings. Rather choose to eat chicken, turkey, fish and beans for protein source. Remember also that the average Americans eat way too much protein than recommended amount. Eat plenty of fruits and vegitables.
Human being is an animal specie made to eat basically plant products.
I'm not saying to you to become a vegitarian. You've probably heard that the average Americans don't eat the necessary amount of veggies. I don't mean to suggest smoking, but as an example, there even are statistics that show that smokers eating good amount of veggies tend to live longer than the non-smokers who don't eat much of them. And the vitamin pills are not going to replace them. Again, obviously, avoid soda or other soft drinks.