Serotonin deficiency occurs when serotonin doesn’t act as well as it should in your body. This can happen if your body doesn’t produce enough serotonin or if it doesn’t use serotonin efficiently.

A: Foods rich in tryptophan, such as eggs, cheese, salmon, tofu, nuts, and seeds, may help support natural serotonin ...

Though antidepressants are a common treatment for depression, psychiatrists still don’t have a clear understanding of how exactly they work. A new paper suggests that some explanations persist thanks ...

Serotonin syndrome (serotonin toxicity) is a potentially dangerous condition that arises from excessive serotonin levels in the body. It’s often due to medications or drug interactions and can affect ...

LifeStance Health reports new anxiety medications are expected for 2026, featuring innovative treatments in clinical trials ...

Serotonin is sometimes known as the happy chemical, because it appears to play an important role in regulating mood, and low levels of serotonin in the brain have been associated with depression. (1) ...

Comparing PET scans of more than 90 adults with and without mild cognitive impairment (MCI), researchers say relatively lower levels of the so-called 'happiness' chemical, serotonin, in parts of the ...

Fluctuations of serotonin levels in the brain, which often occur when someone hasn't eaten or is stressed, affects brain regions that enable people to regulate anger, new research has shown.

You’ve probably heard about serotonin, the molecule known as the “happy hormone.” It’s widely thought to play a role in mood, sleep, learning, memory, digestion, and more—in fact, scientists think it ...

A new study suggests this may lead to symptoms seen in long COVID patients. Decreased levels of serotonin in the body may be a contributing factor in the development and persistence of so-called 'long ...