Featured series 
Tag: American Journal of Epidemiology
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Health
Longer use of pain relievers tied to hearing loss in women
A Harvard study has found that women who used ibuprofen or acetaminophen for six years or more were at higher risk of hearing loss than those who used these medications for a year or less.
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Health
How power of positive thinking works
A Harvard study shows that although an optimistic outlook may help women live longer, one other possibility is that higher optimism directly impacts our biological systems.
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Science & Tech
Social ill
A new study finds link between lack of close ties and heart disease risk, adding to evidence that a person’s social environment can play a big role in health.
