Michelle Mone's diet pills 'amongst the worst celebrity diets of the year'

Other diets to make the list include those allegedly followed by Harry Styles, Jake Gyllenhaal and Elle Macpherson

Baroness Mone credits the pills for helping her lose six stone (Gareth Cattermole/Getty Images)

A weight loss supplement endorsed by the businesswoman Baroness Michelle Mone OBE has been dubbed one of the worst “celebrity diets” of the year.

In their annual list of celebrity diets to avoid, the British Dietetic Association (BDA) criticised a number of meal plans made famous by their association with celebrities.

The TrimSecrets diet plan, which Tory Peer Baroness Mone invested in after claiming it helped her lose six stone in 2010, ranked fifth.

TrimSecrets, which costs £14.95 per fortnight, recommends followers take a capsule before each meal, eat 1,500 calories a day, drink 1.5 litres of water and engage in regular exercise.

The pills’ main ingredient is sinetrol, which is a blend of compounds extracted from various citrus fruits. The pill is supposed to suppress appetite and simultaneously increase metabolism.

The BDA cast doubt over the effectiveness of the capsules. “By consuming 1,500 calories a day, most individuals should lose weight regardless of whether they are taking this pill and that’s no secret," it said in its annual 'Top Five Worst Celeb Diets to Avoid' list.

“The pill has echoes of the grapefruit diet and includes guarana which is high in caffeine yet states it’s caffeine free. Beware of pills and potions and make sure you know exactly what you are buying and taking.”

After revealing her weight loss in 2010, the Ultimo founder's publicist said: “Michelle owes her weight loss to TrimSecrets.”

The “No Sugar” diet, reportedly followed by Tom Hanks and Alec Baldwin, came first on the list. The BDA say that although cutting down on sugars, especially products with ‘added sugar’ is positive, some versions of the diet promote excluding all sugars including fruit and vegetables.

The ‘only kale and chewing gum’ diet, allegedly followed by Jake Gyllenhall when he was losing weight for his role in the film Nightcrawler came second, as it solely involves just eating kale salads and chewing gum.

The BDA called the diet “extreme, socially isolating, unbalanced, hard to sustain and potentially harmful”.

A ‘buttery coffee’ diet said to be followed by Harry Styles and Super Elixir, the £96 a month alkaline-based diet in the form of green powder produced by supermodel Elle Macpherson, completed the list.

The Independent has approached a representative of Baroness Mone for comment.