Which neurotransmitter is most commonly linked to feelings of well-being?

The neurotransmitter most commonly linked to feelings of well-being is serotonin. Serotonin plays a crucial role in mood regulation, and higher levels of this neurotransmitter are associated with feelings of happiness and contentment. It is often referred to as the "feel-good" neurotransmitter due to its influence on mood, anxiety, and overall emotional state.

Research has shown that serotonin is involved in various bodily functions, including mood stabilization, appetite control, and sleep regulation. Imbalances in serotonin levels are often implicated in mood disorders, such as depression and anxiety, further emphasizing its connection to emotional well-being. Drugs that increase serotonin levels, including certain antidepressants, are frequently used to treat depression, underscoring serotonin's vital role in mood enhancement.

Other neurotransmitters listed might contribute to mood and emotional states in different ways, but serotonin is particularly renowned for its strong association with overall well-being.