Does weight loss increase the likelihood of menstrual bleeding

Losing weight may lead to missed menstruation, but the probability varies from person to person. The main influencing factors include rapid weight loss, low body fat percentage, nutritional imbalance, excessive psychological pressure, endocrine disorders, etc.

1. Rapid weight loss

Rapid weight loss in the short term can interfere with the function of the hypothalamic pituitary ovarian axis. When weight loss exceeds 10% of baseline weight, menstrual cycle disorders are more likely to occur. It is recommended to control weight loss within the range of 0.5 to 1 kilogram per week and avoid extreme dieting or excessive exercise.

2. Low body fat percentage

Female body fat percentage below 17% may affect estrogen synthesis. Adipose tissue is involved in sex hormone metabolism, and excessive weight loss can lead to a decrease in estrogen levels. Some women may experience amenorrhea when their body fat percentage drops to a critical value, and the risk needs to be assessed through professional body fat testing.

3. Nutritional imbalance

Long term lack of carbohydrates, high-quality protein, or essential fatty acids can affect the secretion of gonadotropins. Insufficient intake of iron may increase the risk of anemic amenorrhea. During the weight loss period, it is necessary to ensure a daily intake of no less than 120 grams of carbohydrates, and to supplement iron containing foods such as animal liver and dark vegetables in moderation.

4. Excessive psychological pressure

Anxiety caused by weight loss can increase cortisol levels and inhibit the secretion of gonadotropin-releasing hormone. Some people experience stress-induced amenorrhea during strict dietary control, which usually requires psychological intervention and nutritional adjustments to restore the menstrual cycle.

5. Endocrine disorders

Polycystic ovary syndrome patients are more prone to menstrual abnormalities during weight loss. Rapid weight loss may temporarily exacerbate insulin resistance, thereby affecting follicular development. Individuals with underlying endocrine disorders should develop a weight loss plan under the guidance of a doctor and, if necessary, cooperate with medication treatment. Scientific weight loss should focus on a balanced diet combined with moderate exercise. It is recommended to consume 300 to 500 grams of vegetables and 200 to 350 grams of fruits daily, and choose low-intensity exercises such as brisk walking and swimming. If amenorrhea occurs for more than three months, seek medical attention promptly and investigate pathological factors such as hypothalamic amenorrhea and premature ovarian failure. During the recovery period of menstruation, it is advisable to increase the intake of healthy fats such as nuts and whole grains appropriately to avoid experiencing severe weight fluctuations again.