Use the Vegetarian Food Pyramid to maintain a healthy balanced diet by eating foods from all the food groups. Each of these vegetarian food groups provides some, but not all, of the nutrients you need. Foods in one group can't replace those in another. No one food group is more important than another - for good health, you need them all. Vegans should pay special attention to their vitamin B12 and vitamin D intake by eating fortified foods or taking vitamin B12/ vitamin D supplements.
Vegetarian Diet Nutrition Guidelines
Vegetarian Diet Nutrition - Protein
Plant sources of protein alone can provide all the protein required by vegetarians and vegans provided a variety of plant foods are consumed. Complementary proteins do not need to be consumed at the same time if they regularly appear in the diet.
Vegetarian Diet Nutrition - Iron
Although vegetarian diets are higher in total iron content than nonvegetarian diets, iron reserves are lower in vegetarians because the iron from plant foods is less well absorbed. That said, iron deficiency anemia rates are similar in vegetarians and nonvegetarians. Remember that it's easier to absorb iron from food if we eat it with foods that contain Vitamin C, so have some fruit or veg containing vitamin C, or some fruit juice with your meal.
Vegetarian Diet Nutrition - Vitamin B12
Plant foods are not a reliable source of B-12 for vegetarians. Vitamin B-12 in spirulina, sea vegetables, tempeh, and miso has been shown to be inactive B-12 analog rather than the active vitamin. Although dairy products and eggs contain vitamin B-12, research indicates that lacto-ovo-vegetarians have low blood levels of vitamin B-12. Thus use of fortified foods or supplements are advised for vegans or vegetarians who limit animal foods.
Vegetarian Diet Nutrition - Vitamin D
Vitamin D is poorly supplied in all vegetarian diets unless vitamin D-fortified foods are eaten. However, vegan vitamin D-fortified foods - such as soy milk and cereals, are becoming more widely available. Exposure to direct sunlight exposure is a major source of vitamin D, so dietary intake is not important if sun exposure (to hands, arms, and face for 5 to 15 minutes per day) is adequate.
Vegetarian Diet Nutrition - Calcium
Ovo-lacto vegetarians have calcium intakes that are comparable to those of nonvegetarians. Calcium is well absorbed from many plant foods, and vegan diets can provide adequate calcium PROVIDED the diet regularly includes foods rich in calcium.
Vegetarian Diet Nutrition - Zinc
Because of the lower uptake of zinc from plant foods, vegetarians should attempt to meet or exceed the zinc RDA.
Vegetarian Diet Nutrition - Notes on Optimum Vegetarian Health
Standard adult vegetarian diets (which are low in fat and high in fibre) can fill up infants (under 5 years) before they have ingested sufficient energy and nutrients. So vegetarian diet plans for infants should include fewer high-fiber foods and more energy and nutrient-dense foods.
A vegetarian diet is fine for children and provides all the nutrients required for normal growth and development. Vegetarian kids are similar in height and weight to non-vegetarian kids and are less likely to be overweight.
