Diet mogul Ashy Bines' eating guidelines have been criticised by dietitians.

Diet mogul Ashy Bines' eating guidelines have been criticised by dietitians.

Follow Ashy Bines' Clean Eating Guidelines at your peril, the Dietitians Association of Australia has warned.

The Gold Coast bikini babe has been one of the Australian health and fitness industry's most divisive figures for more than two years.

Despite having no nutritional qualifications, the 24-year-old made her name, and her millions, when she launched her Clean Eating Guidelines.

Women across Australia and the world flocked to purchase the $69 blueprint for looking like the bikini model.

Now, after a wide-ranging survey of its members, the Dietitians Association of Australia has listed it as one of the three worst diets on the market.

So nutritionally unsound is the plan, the experts say, it only ranks behind the liquid-only weight loss plans, the Lemon Detox Diet and Skinny Me Tea, in diets to avoid.

Dietitians Association of Australia spokeswoman Melanie McGrice said the main reason nutritional practitioners opposed the plan was its cookie cutter approach to weight loss.

"Dietitians really discourage people from undertaking fad diets, and a fad diet is one that hasn't been individually tailored to suit people's needs," she said.

"The DAA calls on people to seek out individually tailored advice rather than follow fad diets."

Ms Bines' guidelines encourage women to eat fresh whole foods and limit carbohydrates, sugar and saturated fat.

It also advises the elimination of dairy products and not to eat more than one piece of fruit each day.

Brisbane dietitian Julie Masci said the plan contained some good advice but was too restrictive to remain sustainable in the long term.

"The real positive I see from it is it does focus on whole foods and a move away from processed foods," she said.

"It is encouraging the majority of the diet promotes vegetables and salad and advises the limitation of saturated fat and sugar.

"Where it goes too far, is saying you can only have one piece of fruit a day, you shouldn't eat carbs after morning tea, all of those things are very prescriptive.

"They are not for the general population."

Ms Masci said anyone who followed the plan for a long time risked long-term damage of their metabolism, which would almost certainly lead to weight gain down the track.

"It's just not manageable forever, and that is the key," Ms Masci said.

"Ask yourself, can I do it for the rest of my life?

"If the answer is no, don't start.

"A lifestyle doesn't have an end point, a diet does."

The popularity of Ms Bines' original Clean Eating Guidelines spawned a health and fitness juggernaut.

Ashy Bines Bikini Body Challenge boot camps are now run across the country and this year, plans are afoot for the opening of her multi-million dollar "transformation centre" on the Gold Coast.

Ms Bines has been contacted for comment.