SHE may be the hottest star in Hollywood but MEGAN FOX has been dealt a cruel blow by movie fans.

The Transformers star has been named the WORST actress of 2009.

Megan beat BEYONCE and HILARY SWANK to the dubious honour in a poll on US website.

And to add insult to injury Transformers: Revenge of the Fallen was Worst Film of 2009 as well as the second-most Disappointing Film of the Year, after SACHA BARON COHEN'S Bruno.

Bizarrely, Transformers 2 also picked up the Best Action Movie accolade.

And the Foxy one didn't walk away completely empty handed - she was once more voted Sexiest Female Star.

Megan Fox and Cindy Crawford swear that vinegar is the key to staying slim, while Shilpa Shetty claims fizzy drinks cause wrinkles and Roger Moore warns that foie gras may give you a terminal illness.

Scientists have warned against the increasing number of celebrities who have used their high profile status to publicise a string of spurious theories on how to stay young, slim, beautiful and healthy.

The charity has singled out the worst offenders, including Transformers actress Miss Fox and Black Eyed Peas singer Stacy Ferguson, who extol the virtues of vinegar as a dieting and detoxing aid.

Miss Fox said this year: "It just cleanses out your system entirely. It will get rid of, for women who retain water weight from your menstrual cycle and all that, it gets rid of it really fast.

"I'm not one for dieting or exercising, 'cause I'm lazy and I have a really big sweet tooth, so I have to do cleanses every once in a while 'cause of the amount of sugar I take in."

Lucy Jones, a dietitian with the Whittington NHS Trust in London, said: "As attractive as it sounds, there is no magic pill, lotion or potion for a quick fix to weight loss. The body, including the liver, is a well-oiled detoxing machine, which will not be improved by vinegar, whether it be organic, apple cider, unfiltered, or your bog-standard malt vinegar."

Also criticised is Roger Moore, who claimed that eating foie gras can cause Alzheimer's, diabetes and rheumatoid arthritis, and is "a tasty way of getting terminally ill".

Commenting on the actor's claims, Miss Jones said: "No single food should be looked at in isolation or attributed to causing any disease or curing one."

Gwyneth Paltrow's views on the dangers of pesticides in foods have also come under the spotlight.

Dr John Cherrie, of the Institute of Occupational Medicine, said: "Gwyneth misses the point that it is the dose that makes the poison. The amounts in our food are very low and there is no evidence of any ill-effects."

Ellen Raphael, of Sense About Science, which offers to coach celebrities as part of its drive to increase the public's understanding of science, said: "People in the public eye have disproportionately "loud" voices, and with the internet misleading claims live on for a long time.

"This is an open invitation for celebrities to get in touch with scientists to check the facts before speaking out on subjects they know little about."