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.
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).