Relationship between people's health and food health

A, lemon yellow, saccharin sodium, corn essence mostly contain cadmium, lead and other heavy metals, and long-term intake will cause cancer, so it is wrong;

B. Yogurt is a kind of dairy product, which takes fresh milk as raw material, adds beneficial bacteria (starter) to the milk after pasteurization, cools and fills after fermentation. Correct;

C. Clenbuterol is a hormone and is not easy to decompose. Long-term use is harmful to human health, so it is wrong;

D, gutter oil can be reused, but it contains many metamorphic ingredients, which is harmful to human health, so it is wrong;

So choose B.