Deadly Physiology of Stress

Last week I discussed the physiology of stress.

The flood of hormones that result from stress have profound effects on our bodies. The corticosteroids cause a decrease in immune function, and increase in blood sugar, a breakdown of muscle and a decrease in natural killer cell function. The result is an increased risk of disease, an increased risk of infection and an increased risk of cancer. The catecholamines secreted by the adrenal medulla cause an increase in heart rate, an increase in blood pressure, an increase in respiratory rate and a decrease in immune system health.

This results in an increased risk of heart disease and stroke, an increased risk of infection, moodiness and anger and digestive problems. As these stress hormones surge through your body they also crank up your metabolic rate causing the production of more free radicals.

The discovery of the effects of stress on the immune system has been a milestone in understanding how stress causes disease It sheds light on the complex interaction between the mind and the body.