Evidence supporting the use of: Carbohydrate
For the body system: Cortisol

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Synopsis

Source of validity: Scientific
Rating (out of 5): 3

Carbohydrates play a recognized role in supporting the body’s stress response, which is regulated in part by cortisol, a glucocorticoid hormone produced by the adrenal cortex. Scientific evidence suggests that carbohydrate intake can influence cortisol levels, particularly during and after exercise. Research demonstrates that consuming carbohydrates before, during, or after physical activity can attenuate the rise in cortisol that typically accompanies strenuous exercise. This effect is due to the maintenance of blood glucose levels, which reduces the physiological stress response and the subsequent release of cortisol.

In addition, studies in the context of psychological stress indicate that low-carbohydrate diets may be associated with elevated cortisol levels, while adequate carbohydrate intake can help moderate this response. This is because carbohydrates stimulate insulin release, which helps regulate blood sugar and may indirectly modulate cortisol production. However, while there is support for carbohydrate’s role in acute stress management and exercise recovery, the evidence for its long-term impact on overall cortisol regulation in non-athletic or chronically stressed populations is less robust.

In summary, scientific evidence supports the use of carbohydrates to modulate cortisol responses in certain physiological contexts, particularly exercise and acute stress. However, the strength of evidence for chronic cortisol regulation is moderate, and more research is needed to clarify long-term effects.

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