Dopamine

Dopamine is a hormone and neurotransmitter occurring in a wide variety of animals, including both vertebrates and invertebrates. In the brain, this phenethylamine functions as a neurotransmitter, activating the five types of dopamine receptors — D1, D2, D3, D4 and D5, and their variants. Dopamine is produced in several areas of the brain, including the substantia nigra and the ventral tegmental area. Dopamine is also a neurohormone released by the hypothalamus. Its main function as a hormone is to inhibit the release of prolactin from the anterior lobe of the pituitary. Dopamine has many functions in the brain, including important roles in behavior and cognition, motor activity, motivation and reward, inhibition of prolactin production (involved in lactation), sleep, mood, attention, and learning. Dopaminergic neurons (i.e., neurons whose primary neurotransmitter is dopamine) are present chiefly in the ventral tegmental area (VTA) of the midbrain, substantia nigra pars compacta, and arcuate nucleus of the hypothalamus.

What is Dopamine?

Discover how dopamine shapes our thoughts, emotions, and movements, and why unlocking its secrets could transform treatments for some of the most challenging brain disorders.

Role of Dopamine in Pain

Is Dopamine Detoxing Actually Backed by Science?

Addiction and Dopamine

Dopamine Biochemistry

How Brain Cells Talk: Inside the Complex Language of the Human Mind

The Reward System and Autism

Dopamine Therapeutic Use

GABA Activation and Dopamine Suppression

What are Neurotransmitters?

Dopamine and Psychosis

Dopamine Functions

Latest Dopamine News and Research

Rare sugars activate metabolic signaling to reduce alcohol consumption in mice

While investigating the FGF21-oxytocin-dopamine system, a mechanism that regulates sugar appetite, a team of researchers at Kyoto University noticed reports suggesting that the protein FGF21 may regulate alcohol ingestion.

12 Jan 2026

Parkinson’s disease may stem from iron starvation rather than iron overload

This perspective argues that Parkinson’s disease may involve functional iron deficiency, where bioavailable iron is limited despite normal or elevated total iron in the brain. The authors propose that iron sequestration, not iron toxicity alone, may impair dopamine synthesis and neuronal survival.

6 Jan 2026

TAAR1 mutation impairs brain signaling in schizophrenia

A genetic mutation passed from mother to children in families affected by schizophrenia has now been shown to completely silence a brain receptor that pharmaceutical companies are racing to target with new drugs.

6 Jan 2026

Integrated neural probes reveal dopaminergic control of sleep-wake transitions

Understanding the dynamic neural mechanisms of sleep-wake cycles is a major challenge in sleep science and neuroengineering.

6 Jan 2026

Unlocking sleep-wake secrets with dual brain signal analysis

Understanding the dynamic neural mechanisms of sleep-wake cycles is a major challenge in sleep science and neuroengineering.

22 Dec 2025

Cutting carbs, not fat, may better control appetite in women

Research indicates low-carb diets may enhance appetite regulation and reduce food cues in women with lipedema, offering a dietary intervention advantage.

19 Dec 2025

Rethinking dopamine’s role in movement and Parkinson’s disease

A McGill-led study is challenging a popular theory about how dopamine drives movement, a discovery that could shift how scientists think about Parkinson's disease treatments.

17 Dec 2025

Lysophosphatidylcholines show gene-dependent effects in early Alzheimer’s disease

A new study presents robust evidence on the role of lysophosphatidylcholines (LPCs) in the onset of Alzheimer's disease. Researchers discovered that LPCs-compounds that transport a variety of healthy fatty acids to the brain-either promote Alzheimer's or protect against it, depending on a person's genetics.

17 Dec 2025

Neuron structure variations impact sensory information processing in mice

Closely related subtypes of dopamine-releasing neurons may play entirely separate roles in processing sensory information, depending on their physical structure.

16 Dec 2025

Combining stem cell therapy and BDNF enhancement to manage Parkinson’s disease

Parkinson's disease (PD) is an age-related, progressive, neurodegenerative condition, caused by loss of dopamine-producing neurons.

16 Dec 2025

Internet gaming disorder affects one in ten boys

Do your kids play a lot of computer games? Some may end up gaming a little too obsessively. Researchers have identified the most important warning signs.

11 Dec 2025

Physical activity may help restore ease of movement and agility during aging

The brain-chemical surge that comes with running may bolster coordination and speed in the old and young alike, a new study of middle-aged mice shows.

9 Dec 2025

Study reveals how brain protein KCC2 influences reward learning

A new finding from researchers at Georgetown University Medical Center shows that the learning process of associating cues with rewards can be altered by increased or decreased activity of a specific protein in the brain.

9 Dec 2025

Laughing gas shows fast antidepressant effects in early clinical trials

A systematic review and meta-analysis in eBioMedicine shows that nitrous oxide can rapidly reduce depressive symptoms within hours, particularly at higher doses, but effects are short-lived after single treatments. Repeated dosing appears to extend and strengthen antidepressant benefits, although the current evidence is based on small, early-phase trials with limited long-term safety data.

8 Dec 2025