other factors that shift demand curves income is not the only factor that causes a shift in demand other things that change demand include tastes and preferences the composition or size of the population the prices of related goods and even expectations
Causes of Early Menopause. Like in menopause that happens later in life, hormonal fluctuations are one of the root causes of early menopause. However, it is not fully known why these hormonal fluctuations are triggered earlier for some women.
Most of the symptoms associated with menopause actually happen during the perimenopause stage. Some women go through menopause without any complications or unpleasant symptoms. But others find menopausal symptoms debilitating, beginning even during perimenopause and lasting for years. The symptoms that women experience are primarily related to a lowered production of the female sex hormones estrogen and progesterone.