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This is the bizarre diet that Megan Fox and Adriana Lima are both obsessed with

Lately, in the world of fitness, one diet has been stealing the spotlight. It's a diet that has been earning rave reviews from A-listers and everyday folks alike. That diet, ladies and gentlemen, is the Keto diet.

Essentially a very high-fat, low-carb eating plan, the ketogenic diet forces your body to burn fat rather than carbs for energy. High-protein and high-fat foods (think: meat, full-fat dairy, eggs, avocado, oils, and low-carb veggies) dominate the keto diet's menu, while any high-carb foods might as well be chucked in the trash and forgotten about.

Most keto diets involve consuming less than 50 grams of carbs a day (that's about what you'll find in two bananas) so, it goes without saying, the keto diet is not for the faint-hearted. However, when it comes to getting and staying in awesome shape, Hollywood doesn't typically shy away from hard work. Here are five celebrities who are obsessed.

1. Halle Berry

This badass beauty has been following the ketogenic diet since before it was cool. On her Instagram, she writes “For years, I have been following the keto or ketogenic diet,” helping her even manage her diabetes (admitting she's suffered from it since she was 19).

Halle emphasizes that she hates the word "diet", saying: "I hate the word 'diet' so while you’ll see the word diet, just know I encourage you to think of it as a lifestyle change." Hall credits that lifestyle change as being "largely responsible for slowing down my aging process," and helping her lose her "baby belly, control her appetite, and boost her energy and mental performance."

halle-berry

2. Vanessa Hudgens

On the Rachael Ray Show, Vanessa Hudgens opened up about what a typical day of eating looks like for her. For breakfast, she likes to have eggs, bacon, half an avocado, and a coffee. Lunch is usually a salad with chicken, more avocado, tons of greens, and maybe some nuts or fruit. Dinner often involves grilled salmon or steak with a salad or sautéed veggies - highlighting that she loves avocados (if you couldn't tell). All of the above are healthy, and they are all ketogenic.

Vanessa says “I think that we’ve been brainwashed to think that fat is bad, but really, it’s what going to make you feel fuller longer." Because it takes a long time to digest, fat can promote satiety and help curb cravings and this can help you lose weight.

vanessa-hudgens

3. Megan Fox

The actress credits a strict, low-carb diet (along with long walks) for helping her stay svelte after having three kids. "I cut out all bread and those sort of carbohydrates. No crackers, no pretzels, no chips." Megan continues "I don't have any cheat days. It's like giving up smoking. I gave up smoking cold turkey. I'm one of those people when I'm committed, there's no stopping me. So, I did it and after about a week, it repulses me. Like, there's bread over there and never again would I put that in my body."

megan-fox

4. Kourtney Kardashian 

A typical day on Kourtney's low-carb detox plan features a green smoothie with avocado for breakfast, then lean proteins and veggies (such as greens, cauliflower rice, or broccoli) for lunch and dinner. Although she doesn’t explicitly state she’s on the keto diet, her gluten-free, sugar-free style of eating keeps her in a regular state of ketosis and definitely qualifies.

kourtney-kardashian

5. Adriana Lima 

When New York Magazine’s "The Cut" interviewed the Vicotria's Secret model, Lima revealed she stays away from all starchy foods: “Definitely zero carbs for sure,” she says. Adriana even pushed aside carrots that were served with her lunch, the writer reports.

Victoria Lindsay, a registered dietitian says this low-carb approach is too far. "Of all the carbs to skip on, passing on the vegetables isn’t doing your body any favors," she says. Maybe she just doesn't like carrots? But if you like 'em, eat 'em! Model or not, you have to eat your veggies.

adriana-lima

If you're thinking of following this plan, make sure that you are going ahead with absolute confidence that you aren't hurting your body. Look for professional help and do your best to incorporate it into a balanced lifestyle (allow yourself a pizza from time to time). Do this and you'll be on your way to looking like your favorite star.