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..
The Centers for Disease Control and Prevention estimates around 35 percent of American adults are obese, meaning they have a body mass index higher than 30. Obesity is the leading cause of preventable death and contributes to health problems such as diabetes and heart disease. Certain hormones are a contributing factor to obesity, and estrogen appears to help determine your body fat distribution.
Hormones and the Brain. That's not to say estrogen isn't a major player in regulating moods. Estrogen acts everywhere in the body, including the parts of the brain that control emotion. Some of estrogen's effects include: 1  Increasing serotonin, and the number of serotonin receptors in the brain.