fad eater
A person who blindly follows every new diet trend like it's the only thing that matters, even if it's nonsense and makes them feel like a mess.
I just started the low-carb diet and I’ve been eating meat and cheese like it’s my last meal.
My coworker tried the bulletproof coffee thing and now she can’t even drink regular coffee.
I’ve been doing the 16:8 diet and I feel like a zombie every time I eat.