Lack of menstruation due to dieting is caused by weakness of Qi and blood. If your period is wrong for more than seven days, you need to take progesterone capsules as soon as possible. After taking three days and stopping the drug, you will usually get your period within seven days. It is recommended to stop dieting as soon as possible, and make sure to eat more highly nutritious food, such as meat, milk and eggs, and less pasta, so as to not only ensure balanced nutrition of the body, but also play a weight loss effect, and avoid endocrine disorders caused by weak qi and blood, and it is recommended to actively exercise to enhance blood circulation, eat more warm food, drink more hot water, and ensure enough sleep, so as to ensure fullness of qi and blood. Appropriate conditioning, slowly restore the body’s endocrine, to avoid long periods of non-arrival, resulting in ovarian atrophy, causing amenorrhea will be difficult to regulate normal, and in serious cases will affect normal pregnancy.