Some interesting facts about yogurt are that it contains living bacteria that contribute to digestive regularity and strengthens the immune system, it is a USDA approved meat substitute in school lunch programs because of its high protein content, and it helped to cure French King Francois I of diarrhea, introducing yogurt to the Western world. Another interesting fact about yogurt is that it is an effective face mask treatment due to its lactic acid, zinc and calcium content.
The bacteria in yogurt labeled as live and active is either Lactobacillus bulgaricus or Streptococcus thermophilus, or sometimes both. These bacteria help to reduce gas and bloating and promote a healthy metabolism. While yogurt in general is a high-protein food, Greek varieties of yogurt contain up to two times the amount of protein as standard yogurt. Yogurt is a low-calorie food, making it a popular choice for those on diets, and it goes well with other ingredients for mixing or dipping, such as fruits, nuts, candies and vegetables. Another interesting property of yogurt is that it has been shown to improve bad breath.
Due to the fermentation process used to create yogurt, it is easily digested even by those who are lactose-intolerant. Yogurt can be made from the milk of any mammal, including sheep, cows, camels and buffalo.