When women reach the ages of 45 to 55 years old, they become very sensitive to the temperature changes, especially the heat. With this sensitivity, their faces will often suddenly turn red and sweat.
One of the reasons for the heat sensitivity is that their progesterone, serotonin and GABA, which are the relaxing hormones, are on the decline, and additionally their nerves become extra sensitive to stress, temperature changes, and noise.
When the temperature sensor in the brain detects a slight temperature change inside or outside the body, the blood vessels start dilating trying to expel the heat. Women who drink alcohol and eat spicy food will have more hot flushes. Acupuncture and Chinese herbs will help women produce more serotonin, GABA and progesterone, so their nervous system is more balanced and they will not be depressed during this period of time.
In animal studies, acupuncture increased estrogen levels after the ovaries were removed. Increased estrogen levels helped reduce both joint pain and weight gain associated with menopause.