Taking showers can make you ill

Showering may be bad for your health, say US scientists, who have shown that dirty shower heads can deliver a face full of harmful bacteria.

Tests revealed nearly a third of devices harbour significant levels of a bug that causes lung disease.

Levels of Mycobacterium avium were 100 times higher than those found in typical household water supplies.



M. avium forms a biofilm that clings to the inside of the shower head, reports the National Academy of Science.

In the Proceedings journal, the study authors say their findings might explain why there have been more cases of these lung infections in recent years, linked with people tending to take more showers and fewer baths.

Water spurting from shower heads can distribute bacteria-filled droplets that suspend themselves in the air and can easily be inhaled into the deepest parts of the lungs, say the scientists from the University of Colorado at Boulder