TikTok not only has bad advice about medical cures and treatments, but advertisements for some useless and misleading devices. Today I look at some dangerous and murky claims made about health and medicine on TikTok, including chiropractors, kneecaps, brain exercises, gym form on weight machines, fingernails, stem cells, neck stretchers, the spins from drinking, male birth control, sperm cells, prescription drugs for mental health, plastic surgery, bears, chest compressions, ear lobes, Rob McElhenney's body transformation, kegels, prosthetic legs, running on all fours, spicy food, raw vegan diet, eye tattoos, ab exercises, FDA approvals, foot fungus, freckle tattoos, and OnlyJayus spoon claims.