In order to optimize ones health one should try and include a balanced portion of fruits,vegetables,grains, fiber, dairy products especially fresh milk and a protein source daily. People should also tailor their diets so as to meet their special dietary requirements and be aware of allergic reactions to certain foods such as peanuts etc.
Nutritionists the world over recommend the four traditional food groups in the proper proportion as they supply just the right amounts of nutrients required for increasing metabolism, performing muscle and electrolyte maintenance, repairing cells and producing the energy required to sustain these bodily functions.
Science has proven that it is in fact natural products and not marketing gimmicks that determine what the bodies need. Every food group has a vital part to play in attaining optimal health.
For example it is foods rich in fiber such as fruits, vegetables and grains that act as Insoluble fiber that aid in digestion and cleanse our systems.