Diseases

Close to half of U.S. population projected to have obesity by 2030

About half of the adult U.S. population will have obesity and about a quarter will have severe obesity by 2030, according to a new study led by Harvard T.H. Chan School of Public Health.

Zinc, folic acid supplement does not improve male fertility, NIH study suggests

Dietary supplements containing zinc and folic acid — marketed as a treatment for male infertility — do not appear to improve pregnancy rates, sperm counts or sperm function, according to a study conducted by the Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD), part of the National Institutes of Health. The study appears in the Journal of the American Medical Association.

Short-term exposure to air pollution linked with new causes of hospital admissions, substantial economic costs

Hospitalizations for several common diseases—including septicemia (serious bloodstream infection), fluid and electrolyte disorders, renal failure, urinary tract infections, and skin and tissue infections—have been linked for the first time with short-term exposure to fine particulate air pollution (PM2.5), according to a comprehensive new study led by Harvard T.H. Chan School of Public Health.