This blog post was previously titled: Females are less prone to influenza than males, thanks to Estrogen. E strogen and its derivatives have been found to protect against respiratory infections such as influenza, in females more than males. This new study was published in the American Journal of Physiology-- Lung Cellular and Physiology. A virus usually works/makes you ill by invading a cell in your body and making and replicating itself within the host cell. After being released from the host cell, the virus can go on to infect other cells in the body and also other people. The less a virus replicates, the less severe the infection and the lower the risk it will be spread onto other people. The researchers used human nasal epithelial cells (hNECs) from male and female donors- which are the main cells which the flu virus targets - and exposed the nasal cells to 17β-estradiol (i.e estrogen) or select estrogen modulators (SERMs) (these include natural and synthetic comp