← Neurotransmitters

Myokines

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Signalling proteins secreted by skeletal muscle during contraction (e.g. irisin, BDNF, IL-6, cathepsin B) that mediate muscle–brain and muscle–organ crosstalk, linking exercise to mood, cognition, and metabolism.

Too little may be associated with

Physical inactivity; reduced exercise-driven muscle–brain signalling.

Too much may be associated with

Not typically applicable; some markers rise transiently with intense exercise.

Informational only — not medical advice.

Stimuli that influence it

Materials