On average, it is normal to gain about 1 to 5 pounds (approximately 0.5 to 2.3 kilograms) around your period. This weight gain typically occurs in the days leading up to and during menstruation and usually goes away a few days after your period starts
. The primary reasons for this weight gain include:
- Water retention: Hormonal fluctuations, especially increases in progesterone and estrogen, cause the body to retain more water, leading to bloating and a heavier feeling. This fluid retention is the main contributor to the temporary weight increase
- Bloating and gastrointestinal changes: Hormones can slow digestion and cause constipation or diarrhea, contributing to bloating and the sensation of weight gain
- Food cravings and increased appetite: Hormonal changes can stimulate appetite and cravings for high-calorie, sugary, or salty foods, which may lead to overeating and a slight increase in fat mass if sustained over time
- Reduced physical activity: Fatigue or discomfort during the period may lead to less exercise, which can also contribute to feeling heavier
Scientific studies confirm that the actual increase in body weight during menstruation is mostly due to extracellular fluid retention, averaging about 0.5 kg (around 1 pound)
. In summary, the weight gain experienced during your period is mostly temporary and related to fluid retention and hormonal effects, not fat gain, and typically resolves shortly after menstruation ends
