Female hormones found in tap water and food may be contributing to the development of breasts on male Britons, doctors said.

The number of male breast reduction surgeries in British clinics has doubled in the past year, said the Sunday Times of London Online. Male breast growth is a medical condition called gynecomastia, and is linked to traces of the contraceptive pill in water and other food hormones used in farm animals.

Gynecomastia causes breasts that are not due to fat. They resemble female breasts in makeup and tissue content, doctors say.

Yanos Alexandrides, a London plastic surgeon, has been doing roughly four times the male breast reduction surgeries as he did in 2001, and believes processed fast food in particular is to blame.