Thirdhand smoke exposure effects on liver and brain found to worsen over time


Thirdhand-smoke results when exhaled smoke and smoke emanating from the tip of burning cigarettes gets on surfaces such as clothing, hair, homes, and cars. Using a mouse model, researchers have found that thirdhand-smoke exposure has a significant effect on health, specifically the liver and brain, as early as one month after initiation of exposure — an effect that worsens with time.

Father's environmental exposure affects sperm epigenetics, study shows


Authors of a new report believe that theirs is among the first human studies to investigate the influence of phthalate exposure on sperm epigenetics, embryo development and whether DNA methylation in sperm cells may be a path by which a father’s environmental exposure influences these endpoints. DNA methylation, one mechanism of epigenetics, is a chemical tag on DNA that does not change the gene sequence but is involved in controlling gene expression.

Exposure to head impacts in youth football practice drills


Researchers have examined differences in the number, location, and magnitude of head impacts sustained by young athletes during various youth football practice drills. Such information could lead to recommendations for football practices, including modification of some high-intensity drills in order to reduce players’ exposure to head impacts and, consequently, lessen the risks of injury.