Addiction

Social media use linked to tobacco initiation among youth

The tobacco industry has long appealed to youth through targeted marketing that glamorizes smoking with imagery of candy-flavored products, celebrity endorsements, social settings, and other enticing tactics. That marketing ...

Gastroenterology

Gut microbiota acts like an auxiliary liver, study finds

Microbes in the mammalian gut can significantly change their hosts' amino acid and glucose metabolism, acting almost like an extra liver, according to a new preclinical study by Weill Cornell Medicine investigators.

Neuroscience

Higher light levels may improve cognitive performance

Exposure to higher levels of light can help people feel more awake and increase cognitive performance, probably by influencing the activity of parts of a brain region called the hypothalamus, according to new research.

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