Diet replacement and weight loss! Eating less sugar and starch is beneficial to lose weight, and enzymes lose weight quickly and rebound quickly, but meal replacement is harmful to the body, especially those who lose weight through meal replacement for a long time, which is easy to cause malnutrition and even endocrine disorders. In general, the long-term impact of dietary replacement on human body is due to its relatively low calories and incomplete nutrients. Eating meal replacement for a long time is easy to make people get unbalanced nutrition and malnutrition, and it will affect the endocrine balance in the body and cause endocrine disorders. For example, for women, it may lead to menstrual disorder, resulting in decreased menstrual flow or even amenorrhea.