gene-environment interactions

Researchers at Washington University in St. Louis have developed an extraction and cleanup method that, for the first time, will allow for measurements of RNAi pesticides in soil.

A new study shows the same gene variations that make it difficult to stop smoking also increase the likelihood that heavy smokers will respond to nicotine-replacement therapy and drugs that thwart cravings. The finding suggests it may one day be possible to predict which patients are most likely to benefit from drug treatments for nicotine addiction.

The saying “You are who you hang around with” seems especially true when it comes to alcohol, cigarette and drug use. Researchers at Washington University School of Medicine in St. Louis are reporting that people who hang out with marijuana, cigarette or alcohol users are not only more likely to do the same, but that exposure allows genetic tendencies for substance use to become more robust.