German researchers have confirmed that the erectile dysfunction medication, Viagra, also protects mountain climbers’ lungs from problems associated with high altitude, such as pulmonary hypertension which can be triggered by a lack of oxygen. Research was conducted on climbers at Mount Everest.

The researchers said the penis and the lungs both share a biochemical similarity. Both the penis and the lungs have lots of phospodiesterase, this is an enzyme which constricts blood vessels in the lungs. Viagra (sildenafil) stops the enzyme from working, the result being better erections and blood supply to the walls of the lungs.

Membership in the "Mile High Club" is expected to skyrocket.