A new study shows that individuals with higher IQs in high school are more likely to consume alcohol moderately or heavily later in life, though less likely to binge drink. This connection may be due to social factors, such as income level and career stress, that often accompany higher IQs. Researchers used data from the Wisconsin Longitudinal Study, revealing that each IQ point increase correlated with a 1.6% rise in moderate or heavy drinking.

A recent study shows that alcohol exposure in the earliest stages of pregnancy can lead to detectable molecular changes in the late-gestation placenta, even influencing gene expression through DNA methylation. These changes, particularly in growth and neurotransmitter pathways, could have lasting effects on fetal development, potentially impacting future health. Interestingly, the impact varies by sex, affecting growth-related genes in males and serotonin-related genes in females.