What is one possible issue heavy lifting combined with dieting can cause in menstrual cycles?

Heavy lifting combined with dieting can lead to lighter menstrual flow or bleeding due to the impact of stress on the body and hormonal changes. Engaging in intense physical activity, such as heavy lifting, can alter the levels of estrogen and progesterone, the hormones responsible for regulating the menstrual cycle.

When the body is under physical stress from heavy workouts and is also in a caloric deficit from dieting, it may prioritize energy resources differently, which can inhibit normal ovarian function. This can result in anovulation or irregular cycles, where menstrual bleeding may become lighter than usual.

This physiological response is a part of the body's adaptation to perceived stress and energy imbalance, leading to a reduced shedding of the uterine lining and hence lighter periods. Understanding this relationship is crucial for anyone monitoring their menstrual cycle while engaging in rigorous physical activity or restrictive dieting.