A recent study into the health of middle-aged men has discovered that difficulty getting or maintaining an erection can function as an "early warning sign" for reduced mortality.
The European Male Ageing Study (EMAS) asked 1,788 men aged 40 to 79 to report any health issues or ailments they were experiencing over a period of time - finding that reports of Erectile Dysfunction (ED) correlated with developing worse illnesses and early death.
Though ED is often associated with lower testosterone levels, the study found no relationship between testosterone levels and age of death.