People adopt vegetarian diets for many reasons, including religious and cultural beliefs, health, ecology and economics. People adopt vegetarian diets for many reasons, including religious and cultural beliefs, health, ecology and economics. In some areas of the world, people are vegetarians because of inadequate income and lack of animal products. The American Dietetic Association has stated that vegetarian diets are healthful and nutritionally adequate when appropriately planned. It is important that vegetarians understand the principles necessary to practice safe and healthy eating.
Most vegetarians eat enough food to meet their energy needs.
As with any diet, those with variety, balance and moderation in food selections are more likely to provide sufficient nutrients for good health. The nutrition issues for vegetarians who consume dairy products and perhaps eggs, don't differ much from those of nonvegetarians. The focus should be on lower-fat dairy products, whole grains, vegetables and fruits. Vegans need to address somewhat different issues. Without any foods of animal origin, getting enough calories to maintain a healthy weight can be a challenge.