Simon Cowell and Gwyneth Paltrow have been slammed by a science charity for giving misleading health facts this year.
In an annual report for 2011, Sense About Science (SAS) claimed a host of popular faces had made confusing statements while talking about their health and fitness regimes.
Cowell revealed earlier this year that he takes a cocktail of vitamins C, B12 and magnesium to make him look and feel young.
However Ursula Arens - a dietitian at the British Dietetic Association - said it is unlikely his vitamin injections provide such drastic results.
"The absorption of vitamins is very efficient so - apart from people who are very ill or have particular gut problems - nearly all of what you eat is taken up by your body," she said.
Paltrow is famed for discussing her diet and fitness habits in her Goop newsletter. The gorgeous star is renowned for her detox plans and regularly shares them with fans.
This year, she wrote: "I have gooped about Dr Alejandro Junger's Clean programme before because it gave me such spectacular results; it is really just the thing if you are in need of a good detox - wanting some mental clarity and to drop a few pounds... Here's to a happy liver and an amazing 2011!"
However, Dr Christian Jessen says detoxing is not always the answer to maintaining a healthy lifestyle.
"Your body has its own fantastic detox system already in place in the shape of your liver and kidneys. Much better to drink plenty of water, eat a balanced diet, get plenty of sleep, and let your body do what it does best," he said.
TV personality Snooki was also criticised in the report.
The famously outspoken star claimed she avoided the seaside because "the water's all whale sperm. That's why the ocean's salty".
Snooki was blasted for such claims.
"The salt in the sea comes from many millions of years of water flowing over rocks and minerals," Simon Boxall revealed.
"It slowly dissolves them leading to the 'salty' nature of the seas - it's not just salt but every material on the planet including gold. Salt water actually keeps our oceans free from many human pathogens - so why not give the beach another try and get back in the water?"
Tracey Brown is the managing director at SAS and says there is no excuse for celebrities providing misleading information.
"It's tempting to dismiss celebrity comments on science and health, but their views travel far and wide and, once uttered, a celebrity cancer prevention idea or environmental claim is hard to reverse. At a time when celebrities dominate the public realm, the pressure for sound science and evidence must keep pace," she said.
- Cover Media
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