It's not exactly a new, but the ketogenic "keto" diet is one of the most popular eating plans right now.
However, not everyone is on board the keto train, especially not celebrity personal trainer Jillian Michaels.
In a video for Women's Health "Rant or Rave" series, the former Biggest Loser coach slammed the diet, calling it a "bad plan."
"I don't understand. Like, why would anyone think this is a good idea?" Michaels said, mockingly adding, ""˜You know what we need to do? All fat and animal protein!'"
"No! Bad plan. For a million reasons," the 44-year-old said, before outlining some of those reasons.
"Your cells, your macro molecules, are literally made up of protein, fat, carbohydrates, nucleic acids. When you do not eat one of the three macro nutrients "” those three things I just mentioned "” you're starving yourselves," the mom of two explained. "Those macro nutrients serve a very important purpose for your overall health and wellbeing. Each and every one of them."
So what constitutes a good diet in Michaels' book?
"You don't eat processed sugar, you don't eat processed grains, and to make a very long story short: avoid the keto diet," she said. "Common sense. Balanced diet is key."
She reminds people not to overeat. Even if you decide to include carbs in your regular diet, you can get results by choosing the right kinds and eating them in moderation.
"...carbs are not actually the devil, so if you feel like you want pasta, the key is: whole grain, go organic whenever possible so you're not getting pesticides and all the processed crap," she said. "If you feel like you just need to carb craze, if you adhere to those guidelines I set out you'll be fine. I eat carbs all the time and I'm the picture of health."
So basically what Michaels really wants people to rememeber is that keto is just another fad diet that may end up doing your body more harm than good in the long run. Sure, it could help you lose weight, but so can eating clean and working out without sacrificing your favorite foods.