Mercury Exposure Cancels Cognitive Benefits of Exercise

This article originally appeared here.
Share this content:
Mercury Exposure Cancels Cognitive Benefits of Exercise
Mercury Exposure Cancels Cognitive Benefits of Exercise

TUESDAY, Sept. 27, 2016 (HealthDay News) -- In young Faroese adults, aerobic fitness is associated with short-term memory and processing speed, and the correlation is attenuated by prenatal methylmercury exposure, according to a study published online Sept. 9 in Environmental Health Perspectives.

Youssef Oulhote, Ph.D., from the Harvard T.H. Chan School of Public Health in Boston, and colleagues examined the correlation between aerobic fitness and neurocognitive outcomes at young adult age, and assessed the potential moderating effect of prenatal methylmercury exposure. A total of 262 members of a Faroese birth cohort underwent a graded exercise test of aerobic fitness at age 22 years to measure maximal oxygen uptake (VO2Max). Prenatal methylmercury exposure was assessed from the cord blood concentration of mercury.

The researchers observed a correlation for a one standard deviation (SD) increase in VO2Max with better scores on short-term memory and cognitive processing speed (0.21 and 0.28 SD, respectively). A one SD increase in VO2Max correlated with increased cognitive processing scores (0.45 SD) and a slightly lesser benefit in short-term memory in the group with lower prenatal methylmercury exposure. The group with high prenatal methylmercury exposure exhibited no such correlation.

"Higher aerobic capacity was associated with better performance in short-term memory and processing speed," the authors write. "However, prenatal methylmercury exposure seemed to attenuate these positive associations."

Abstract
Full Text

Share this content:

is free, fast, and customized just for you!

Already a member?

Sign In Now »


Sign up for myCME e-newsletters


Drug Lookup

Browse drugs by: BrandGenericDisease

More in Home

Attempted Suicide Rates, Risk Groups Mostly Unchanged

Attempted Suicide Rates, Risk Groups Mostly Unchanged

Men more often resort to violent means, while women turn to poisoning, drowning

New Visual Symptoms Not Uncommon After LASIK Surgery

New Visual Symptoms Not Uncommon After LASIK Surgery

But most patients report satisfaction with the procedure

Many With Postconcussion Syndrome Don't Recover

Many With Postconcussion Syndrome Don't Recover

Only 27 percent of population recovered; 67 percent of those who recovered did so in first year

is free, fast, and customized just for you!

Already a member?

Sign In Now »