Night sweats in women are often attributed entirely to menopause. But there are several other causes that affect women at every age. Here is the complete picture.
Menopause and Perimenopause
The most well-known cause. Declining estrogen causes the hypothalamus to become hypersensitive to small temperature changes, triggering the heat-dissipation response that produces hot flashes and night sweats. This typically begins during perimenopause, which can start as early as the late 30s, and continues through menopause. The intensity varies enormously between women.
Hormonal Contraceptives
Progestin-containing contraceptives raise body temperature and can trigger vasomotor symptoms including night sweats in some women. This is often overlooked as a cause particularly in younger women who are not near menopause age.
The Menstrual Cycle
Body temperature rises after ovulation due to increased progesterone and stays elevated until menstruation. Women who are significant hot sleepers often find the second half of their cycle considerably worse than the first for night sweating.
Anxiety and Stress
Anxiety raises cortisol and adrenaline levels which directly affect vasomotor function and body temperature. Many women with significant anxiety experience night sweats that are not hormonally related but are driven by the sympathetic nervous system response to stress.
Medications
SSRIs, SNRIs, tamoxifen, and several blood pressure medications are specifically associated with night sweats as a side effect. If night sweats began after starting a new medication this connection is worth discussing with your prescriber.
What Helps Across All Causes
Regardless of the underlying cause removing the environmental heat contribution from bedding significantly reduces the frequency and intensity of night sweats. A nylon cooling blanket draws heat away continuously rather than trapping it. See The Cloud here.
A cooling pillowcase addresses the head and neck. See the Cool Night Pillowcase here.