Gender stereotypes are widely held beliefs about the characteristics and behavior of women and men.  Empirical studies have found widely shared cultural beliefs that men are more socially valued and more competent than women in a number of activities.   Dustin B. Thoman and others (2008) hypothesize that "[t]he socio-cultural salience of ability versus other components of the gender-math stereotype may impact women pursuing math". Through the experiment comparing the math outcomes of women under two various gender-math stereotype components, which are the ability of math and the effort on math respectively, Thoman and others found that women’s math performance is more likely to be affected by the negative ability stereotype, which is influenced by sociocultural beliefs in the United States, rather than the effort component. As a result of this experiment and the sociocultural beliefs in the United States, Thoman and others concluded that individuals' academic outcomes can be affected by the gender-math stereotype component that is influenced by the sociocultural beliefs. 
Q. What types of hormonal changes caused by fibromyalgia? Fibromyalgia affects hormones because I feel pain in my back bone. What types of hormonal changes caused by fibromyalgia? A. Have you ever checked your back pain with a doctor? It may or may not be due to fibromyalgia. Low serotonin levels, low growth hormone levels, and low levels of neuropeptide Y, a component of the feel-good hormone neurotransmitter norepinephrine have been associated with fibromyalgia. Elevated levels of substance P acts as a neurotransmitter and signals the body to experience pain. These pains have also been observed in the spinal cord of fibromyalgia patients.