More females are prone to TMJ than are men, and a greater prevalence of women in their childbearing years suffer from TMJ. This may indicate a serious possibility of a need for better nutrition during those times when a woman is eating for two.
Studies suggest that women on hormone replacement therapy were 77% more likely to seek help for TMJ as are women who are using oral contraceptives (19%). The downsides of the hormone estrogen is becoming more clear as more studies are being done.
Work habits and posture, things that we do every day, are done without thinking. Those habits that affect the muscles of the jaw or those of the neck, head or even shoulders, may reflect into the jaw muscles. Habits such as cradling a telephone between your ear and shoulder, carrying a heavy shoulder bag, singing, anything that promotes a forward head position, or hunching forward can contribute to tension throughout the body, as well as spasmed muscles.