The placenta has long been thought to produce serotonin during pregnancy. But in a new study, Yale researchers shatter the deep-rooted hypothesis — and show that the placenta doesn’t produce serotonin ...

Serotonin is a neurotransmitter important for mood, digestion, and sleep. You can increase serotonin levels naturally through exercise and sunlight. Serotonin is a naturally occurring monoamine ...

Dopamine is involved in movement, coordination, and feelings of pleasure and reward. Serotonin is involved in emotions, but it also affects digestion and metabolism. Dopamine and serotonin are ...