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
Certain types of cancer treatments can cause women to have early menopause. This is menopause that occurs before age 40. It happens when your ovaries stop working and you no longer have periods or cannot get pregnant. Early menopause can cause symptoms such as hot flashes and vaginal dryness. Your health care provider can help you find treatments for these symptoms.
The first sign that you are nearing menopause is a change in your menstrual periods. They may become less frequent. And they may be lighter or heavier than you're used to. Menopause symptoms range from mild (or none) to severe. They include: Hot flashes. Sleep disturbances (insomnia). Emotional changes, such as mood swings or irritability. A change in sexual interest or response. Problems with concentration and memory that are linked to sleep loss and fluctuating hormones (not a permanent sign of aging).