A single mum and model in the UK is encouraging others to follow in her footsteps and drink sperm to avoid winter colds.
The 29-year-old personal trainer, Tracy Kiss from Buckinghamshire said her best friend helps her by supplying his sperm everyday to help give her a strong immunity.
The mum of two has previously advocated on her YouTube channel the use of sperm as a facial to help with a skin condition she has called rosacea.
Everyday Ms Kiss drinks sperm in her smoothie, but not before making her friend get a sexually transmitted disease check beforehand, The Sun reported.
"It can taste really good - depending on what my friend has been eating. My other mates think I'm strange but I don't give a toss," she said.
It took her a while to rope her 31-year-old friend into supplying her with sperm once a week because "he was concerned I'd use it to impregnate myself," she said.
"But once I'd convinced him it was for my beauty regime he agreed."
She said her friend gives her a warning if he's been eating any pungent foods like asparagus, but usually she will drink it straight off the spoon.
"Sperm is an awesome product and we should stop being so ridiculous about it, the health benefits have been well researched and more women and men should take advantage of it particularly as its made by our own bodies," said Ms Kiss.
But a medical writer for the Sun, Dr Carol Cooper said there is no evidence supporting Ms Kiss's claims.
"There's no scientific evidence whatsoever that drinking sperm will stop flu. Plus, depending on where the semen comes from, you could be at risk of catching viruses including HIV," said Dr Cooper.
A general practitioner in London, Dr Sarah Jarvis said sperm has no nutritional value.