For the same reason that management consultants are fond of the Next Big Thing: $$$$. Pushing a new diet drives a ton of revenue. Advertising, TikTok, talk con

For the same reason that management consultants are fond of the Next Big Thing: $$$$. Pushing a new diet drives a ton of revenue. Advertising, TikTok, talk content, experts, books, etc. There's a financial reason Dr. Oz was always on about some batshit crazy new one.