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In general, those who have a vegetarian diet to avoid consumption of foods derived from animals, and eating only plant foods, like whole grains, nuts, vegetables, and fruits. Specifically, there are several types of vegetarians. The difference between the one with the other groups related to food consumption patterns of animal and processed products. Please note, it's been a little number of vegetarians who consume no animal foods at all.

The division of types of vegetarians are as follows;
Lacto-ovo vegetarian. vegetarians who still eat eggs, milk and milk products (like cheese and yogurt), but do not eat meat, poultry, and fish.

Lacto-vegetarian. The only consume milk and dairy products, but avoid other animal foods.

Vegan. Only eat vegetable food sources, do not eat all types of animal products.

Fruitarian. The main food of these fruits, nuts, honey, and vegetable oils.

Semivegetarian. These people usually follow a vegetarian diet, but occasionally still eat red meat, chicken, fish, eggs, and milk.

Several studies have shown, the followers of vegetarians have a reduced risk of death from some specific diseases. For example, cardiovascular disease, hypertension, various cancers, type 2 diabetes, and obesity (overweight). The level of risk reduction is obtained when compared with non-vegetarians. In short, the more vegetarian longevity. Especially considering a vegetarian lifestyle is often accompanied by other healthy lifestyle, such as not smoking, exercising regularly, not drinking alcohol, or drugs.