Cooling blankets are marketed primarily to general hot sleepers. But there are specific medical and health conditions where the benefits are more targeted and significant. Here is an honest overview. This is not medical advice but useful context for people with specific conditions.
Menopause and Perimenopause
The most significant application. Night sweats and hot flashes during menopause are triggered in part by environmental heat buildup under bedding. A cooling blanket removes this environmental trigger. For many women in perimenopause and menopause the combination of a cooling blanket and a cooling pillowcase represents a meaningful improvement in sleep quality without medication. See The Cloud here. See the Cool Night Pillowcase here.
Hyperhidrosis
Primary hyperhidrosis, excessive sweating not caused by temperature, affects around 3% of the population and significantly disrupts sleep. A moisture-wicking cooling blanket keeps the skin drier and more comfortable through the night reducing the clammy discomfort and associated wake-ups.
Multiple Sclerosis
Heat sensitivity is a well-documented symptom of multiple sclerosis. Elevated body temperature can temporarily worsen neurological symptoms. Sleeping cooler may help reduce the frequency and severity of symptom flare-ups during the night.
Anxiety and Stress-Related Insomnia
Anxiety raises body temperature and cortisol levels which interfere with sleep onset and maintenance. Some people with anxiety report that the physical sensation of cool fabric against the skin has a calming effect that supports sleep onset. The evidence here is largely anecdotal but the physiological mechanism is plausible.
Important Note
A cooling blanket is not a medical treatment for any of these conditions. For any condition affecting your sleep please consult a healthcare professional.