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.
One of the most significant questions raised by the new study is what, if any, effect the striking rise in estrogen has on a woman's risk of breast cancer. Studies show that estrogen therapy protects against heart disease and osteoporosis but may increase the risk of breast cancer. Some research also shows that moderate alcohol consumption -- one drink a day for a woman -- may decrease the risk of heart disease and increase the risk of breast cancer, as well.