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Biologically, it comes down to two things: women’s hormone levels naturally rise and fall, and our body’s response to heat is different than men’s, Dr. Arif said.
Women produce less sweat and start sweating in high temperatures, research – including this one 2025 study, External – shows.
This is very quick and easy. (Sweating)
Similar research was found, External Women have a higher core body temperature and body fat percentage than men, which acts as an extra protective layer.
Now combine this with natural fluctuations in women’s hormones, which have already thrown our brains’ temperature control systems “out of kilter,” says Dr. Arif.
Our estrogen and progesterone levels fluctuate during menstruation, menopause, menopause, pregnancy and breastfeeding – this can cause temperature regulation to decline.
All this is hard work for our cardiovascular system, especially in the hot season.
