What can too much serotonin contribute to?

Excess serotonin levels in the body can lead to hypermotility and diarrhea. Serotonin plays a crucial role in regulating gastrointestinal function. An increase in serotonin can stimulate the gut, causing it to contract more frequently and leading to faster movement of food through the digestive tract. This heightened activity can result in symptoms such as diarrhea and hypermotility, as the gastrointestinal system becomes more reactive and accelerated in its movements.

In contrast, other outcomes such as hypomotility and constipation are more associated with lower levels of serotonin, while loss of appetite and nausea can arise from different imbalances but are not directly linked to excessive serotonin levels. Therefore, recognizing the specific effects of serotonin on gut motility is key to understanding why hypermotility and diarrhea are connected with too much serotonin.