fad syndrome
A fake illness you get from being too dumb to tell the difference between a real disease and a thing you saw on a YouTube ad.
She watched 10 videos about 'pineapple diet' and now she thinks she's going to die if she doesn't eat pineapples every day.
He got 'keto' and now he eats nothing but chicken and eggs like it's a religion.
My neighbor took a 'detox' and now she thinks she has a 'crystal energy' problem.