Insulin is a hormone secreted by the pancreas that helps regulate blood glucose levels. Insulinoma is characterized by excess insulin secretion that decreases blood glucose levels. (source)
Excess insulin secretion can cause hypoglycemia, leading to fatigue and reduced cognitive function, hindering physical and cognitive performance. Balanced insulin levels play a positive role in performance by effectively regulating blood glucose, ensuring a steady energy supply for muscles during exercise and promoting optimal recovery.
Consult a healthcare provider.