Just as in people, the drug stimulates the animals to behave more socially.

Host slugs given Prozac to increase their serotonin levels no longer avoid parasitic nematodes, the same behavior seen in infected slugs.

One-third of babies who died of SIDS had higher-than-normal levels of the neurotransmitter in their blood serum, according to a study. 

Activating serotonin receptors halts a binge-like eating behavior in mice, researchers report.

Serotonin’s long-debated role in sleep promotion is temperature-dependent.

Reduction in telomere length is associated with stress early on in life and may have a genetic component, researchers find.

Deficiencies in a cellular motor that carries a serotonin receptor are associated with anxiety in mice.

The mother of disabled twins doggedly pursued the root of her children's illness and found it in their genome profiles.