Natural Versus Processed
Foods in their natural state are healthier to eat than processed foods, because processed foods are usually refined and contain harmful chemicals added as preservatives and flavor enhancers.
Foods such as olive oil, green tea, citrus fruits, leafy green vegetables and foods high in vitamin C have antioxidant powers.
Foods high in chlorophyll content are green plant foods (parsley has an exceptionally high amount) that assist the body in dealing with infections, colds and the elimination of toxic chemicals. Chlorophyll-rich foods are a good source of vitamin K, and they help the body generate red blood cells and detoxify the liver.
Soy costs less than meat, and according to Linda Page (see References), soy is just as good a source of protein as meat, with the added benefit of amino acids, antioxidants and zero cholesterol. The cost of other basic health foods is a bit higher than conventionally grown foods.
Easier Calcium Absorption
Foods such as kale, soy, fish, nuts and seeds provide calcium that is easier for the body to absorb than foods in the dairy group due to the way dairy products are processed.
Frozen vegetables have been found to be more nutritious than fresh vegetables, as freezing preserves the nutritional content of vegetables, whereas storing vegetables in the refrigerator causes deterioration of nutrients over time.