Zac Efron body transformation includes both dramatic physique changes and a viral face mystery. From High School Musical to Iron Claw, here is the truth behind every visible change.

The Baywatch body used diuretics, water restriction, and extreme training. Efron developed insomnia and depression, later saying he never wants to achieve that unsustainable level of leanness again.

Not fillers — a jaw injury. Efron slipped on a granite fountain, shattering his jaw. Surgery and enlarged masseter muscles from recovery altered his jawline, debunking months of cosmetic speculation.

Efron's candid Baywatch admissions helped spotlight muscle dysmorphia — a male body image disorder that is significantly underdiagnosed. His honesty gave millions of men permission to seek help.

Now in his late 30s, Efron focuses on functional fitness, mental health, and longevity over extreme aesthetics. His evolution from teen idol to body-positivity advocate is refreshingly genuine.