The ruling will have far-reaching consequences for employers.
Fat can be breathed out as well as burned off as you lose weight, say biochemists.
A study found that there has been a substantial jump in the rates of teenagers trying e-cigarettes.
The state joins others in requiring insurance companies to cover gender reassignment surgery.
Prenatal exposure to certain chemicals can lead to lower IQs later in life.
Smoking is a major health crisis, with 300M smokers and millions more exposed to secondhand smoke.
Analysis showed being obese at a young age was more damaging to health and life expectancy.
Research shows that eating certain foods can potentially slow the body's aging process.
The CDC says the drop is spurred by higher prices, smoke-free policies and anti-smoking campaigns.
The worldwide cost of obesity is about the same as smoking or armed conflict, research suggests.
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