More than 80 per cent of women experience hot flushes to some degree during menopause, particularly in the perimenopausal phase. During menopause, the levels of oestrogen and progesterone in your body decrease. These sex hormones have various functions, including regulating your body’s temperature. Oestrogen, in particular, plays a crucial role. When oestrogen levels drop, your brain receives a signal that you are too warm, even if that’s not the case and the outside temperature is perfectly comfortable.
Here’s how it works: when oestrogen decreases, the stress hormone norepinephrine increases. Your body responds by cooling itself down (quickly and intensely). Your blood vessels dilate, you sweat profusely, and your skin turns red. It’s as if your internal thermostat is stuck at 35 degrees Celsius. But it can also work the other way around: you feel cold and start shivering; it feels like freezing. If hot flushes occur at night, they are referred to as night sweats.
During your ‘normal’ menstrual cycle, your body functions in the same way. When you menstruate, oestrogen levels drop, and your body temperature decreases slightly. When you ovulate and oestrogen levels rise, your temperature increases again. During menopause, however, these temperature fluctuations are (much) more intense.
After your last menstrual period, hot flushes decrease for many women. It’s just a matter of time before they become less frequent. Ten years after menopause, only five per cent of women still experience them. Are you among that five per cent? Then it’s worth getting it checked out.