The difference between a movement along a demand curve and a shift of demand curve is in why thy occur. A movement along the demand curve is a simple change in the price of the good. For example if a DVD costs $1 and then drops to $0.50, the point on the curve has now moved towards the lower right.
The average age of menopause is 51 years old. But there is no way to predict when an individual woman will have menopause or begin having symptoms suggestive of menopause. The age at which a woman starts having menstrual periods is also not related to the age of menopause onset. Most women reach menopause between the ages of 45 and 55, but menopause may occur as earlier as ages 30s or 40s, or may not occur until a woman reaches her 60s.
When does menopause occur? The average age of menopause in the United States is about 51. About one out of twenty women have late menopause (after age 55) while another 5% stop having periods between the ages of 40 and 45 (early menopause). The age of menopause is reduced by two years in women who smoke. Other factors that affect the age of menopause include a history of type 1 diabetes, a shorter cycle length during adolescence and a family history of early menopause. Can I tell if Iâm approaching menopause?