Nano is a prefix meaning extremely small.. When quantifiable, it translates to one-billionth, as in the nanosecond. Nano comes from the Greek word nanos, meaning dwarf..ano is a prefix meaning extremely small.. When quantifiable, it translates to one-billionth, as in the nanosecond. Nano comes from the Greek word nanos, meaning dwarf..
Aug. 19, 2003 -- Obese women may be more likely to develop breast cancer largely because their bodies produce more estrogen than thin women do. New research suggests that the increase in breast cancer risk faced by obese postmenopausal women may largely be due to higher levels of estrogens circulating in their bodies.
The hormone estrogen helps maintain that fluid and keeps the lining of the vagina healthy, thick, and elastic. During menopause, the drop in estrogen levels reduces the amount of moisture available. It also makes the vagina thinner and less elastic. This is called vaginal atrophy. In addition to menopause, estrogen levels can drop from: