5. Skinny Doesn't Equal Healthy or Unhealthy

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You can't judge your health (or anyone else's!) based solely on body type.

You can be thin and unhealthy, or thin and super-healthy, or an overweight marathon runner.

Even BMI isn't really a foolproof indicator, since it doesn't factor in things like muscle tone.

Fad Diets Are Dangerous and They Don't Work Anyway