Making it into the top five is the TrimSecrets diet plan, reveals The Independent, which received investment from Ultimo founder Michelle Mone after she credited it with helping her lose six stone in 2010.
TrimSecrets is a herbal supplement devised by late alternative health expert Jan De Vries, who was based in Ayrshire, Scotland.
The plan, which claims on its website to be gluten-free, caffeine-free, lactose-free and "all natural", costs £14.95 for a two-week supply of capsules. Users are advised to take one capsule before each meal, which supposedly suppresses appetite and increases metabolism. The main ingredient is sinetrol, which is a mixture of compounds extracted from several different citrus fruits.
The plan also recommends a daily intake of 1,500 calories, plus 1.5 litres of water and regular exercise.
"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," said the BDA. "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."
"Michelle owes her weight loss to TrimSecrets," Tory peer Baroness Mone's publicist said after she lost the weight.
In first place on the BDA's "worst of the year" list was the "No Sugar" diet, supposedly followed by Tom Hanks and Alec Baldwin. Although the BDA say that cutting down on some sugars, especially products with "added sugar", can be positive, some versions of this diet promote excluding all sugars, including fruit and vegetables, which can be unbalanced.
The BDA also slammed the "only kale and chewing gum" diet allegedly followed by actor Jake Gyllenhaal to lose weight for the film Nightcrawler as being "extreme, socially isolating, unbalanced, hard to sustain and potentially harmful."
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