Celebrities might have personal chefs and access to the best food on the planet, but that doesn’t mean they’re eating like royalty. From weird cravings to eyebrow-raising meal plans, some of these choices are downright unhinged. You’d expect green juice and grilled fish—what you’ll find instead ranges from toddler snacks to gas station runs. The wild part? These celebrities crazy diet habits are real, and some of them are proudly sticking to it.
Heidi Montag: A Next-Level Carnivore Diet

Chowing down on organ meat sounds intense, but it’s got fans for a reason. If you ever wanted a fridge that looks like a butcher shop, this one’s right up your alley.
Victoria Beckham Has Eaten the Same Meal of Fish and Vegetables

Two decades of fish and greens sounds more like a science experiment than a meal plan. But hey, if you’re aiming for that forever runway-ready look, this could be your template.
Arnold Schwarzenegger Treats Himself to Boozy Protein Shakes

Only Arnold could think tequila belongs in a post-workout shake. It’s part gym grind, part happy hour—and 100% a wild entry in celebrities crazy diet lore.
Mariah Carey Eats Nothing but Norwegian Salmon and Capers Every Day

It’s luxury-level meal prep with none of the variety. Mariah went all-in on this seafood routine, and let’s just say your pantry wouldn’t survive it.
Chris Pratt Did a Fast Called the Daniel Diet

When Chris Pratt gave up all the fun stuff for three weeks, people followed. It’s a cleanse that reads more like a dare than a menu.
Shailene Woodley Eats Clay Regularly for Its Supposed Detoxifying Attributes

Shailene took “earthy” to the next level by literally eating dirt. Supposedly it “pulls out toxins,” but mostly it pulls in raised eyebrows.
Marilyn Monroe Ate Lots of Raw Eggs, Steak, and Hot Fudge Sundaes

Raw eggs and hot fudge? It’s like breakfast meets dessert with no in-between. This combo might’ve worked back in the day, but nutritionists now would lose sleep over it.
Jack Dorsey Eats Just One Meal Daily and Fasts All Weekend

Dinner is basically a 2.5-hour ceremony in Jack’s routine. You’d need monk-level patience—and probably a snack drawer just to survive this setup.
Karl Lagerfeld Drank Up to 10 Cans of Diet Coke Daily

Lagerfeld didn’t just drink Diet Coke—he made it his food group. If caffeine were currency, this guy was loaded.
Madonna Swears by a Macrobiotic Diet of Soy, Sea Vegetables, and Fermented Foods

Think pickled seaweed and tofu on repeat. It’s super niche, very strict, and might actually scare your local deli guy.
Kelly Ripa Eats to Optimize Her PH Level With the Alkaline Diet

Kelly’s plate is all about keeping things “balanced,” even though your body’s already got that handled. You’d need a pH chart just to plan lunch.
Brooke Shields Made the Grapefruit Diet Famous

Grapefruit for every meal sounds like a citrus overload. It’s a classic example of celebrities crazy diet trends with more acid than common sense.
Christina Aguilera Has Done the 7-Day Color Diet

Eat by color, not by craving. Christina’s method turns your fridge into a rainbow—but not the kind that comes with cake.
Katy Perry’s M Plan Calls for Replacing One Meal a Day With Mushrooms

The M Plan skips logic in favor of shrooms. There’s no proof it works, but if you really love fungus, you’re halfway there.
Penn Jillette’s Diet Plan Included Two Weeks of Eating Only Potatoes

Two weeks of plain potatoes isn’t magic—it’s survival mode. Even Penn admitted it was extreme, but it rebooted his routine.
Kate Middleton Reportedly Did the High-Protein Dukan Diet

This diet means loading up on protein and waving goodbye to carbs. It’s royal-level strict and somehow still less fun than it sounds.
Tom Brady Doesn’t Eat Eggplants or Tomatoes, but He Does Drink Gallons of Water Daily

Brady’s TB12 method bans nightshades like eggplants and tomatoes in the name of inflammation control. But research doesn’t back the idea that cutting these veggies or changing your pH will do much. Ironically, the nutrients in those foods might actually help with inflammation.
Joe Rogan Tried a Trendy All-Meat Diet

Joe turned into a walking steakhouse for a whole month. No plants, no bread—just meat, grit, and bragging rights.