Research carried out at Copenhagen University Hospital expose that drinking one litre of the fizzy stuff a day could decrease sperm count by 30% and lead to problems getting it up.

Men addicted to cola had far less effective sperm than those who boycotted the drink.

Scientists suggest a sweetener in the drinks could damage arteries and prevent blood flow into the penis.

The study determined that drinking the odd can isn’t damaging to health, but if you want to keep your manhood in perfect working condition – it might be worth cutting back.