The radiation difference was one I was particularly interested in - fielded a question on it at Bio.SE http://biology.stackexchange.com/a/10084/4101 http://biol

The radiation difference was one I was particularly interested in - fielded a question on it at Bio.SE http://biology.stackexchange.com/a/10084/4101 http://biology.stackexchange.com/a/10084/4101 - but it's a good example of why this is important to study. Just as we saw with heart attacks, where females exhibit different signs and symptoms than males, this kind of study can drastically change our expectations as we look toward longer-term space flight.