However, there is one effect of infrasound that can prove deadly during long-term exposure. Infrasound induces stress and causes the body to secrete the hormone Cortisol. This effect is a medically recognized danger of long-term infrasound exposure (see research paper link above). In fact, exposure to infrasound during sleep also stimulates Cortisol production by the body. Why is infrasound’s’ effect on Cortisol so significant?
The hormone Cortisol, produced by the adrenal gland, plays a vital role in preparing our body for stressful “fight or flight” episodes.“It increases blood pressure, blood sugar levels and has an immunosuppressive action ...” that provides needed alertness and energy during stressful experiences. However, during long term stress, or if Cortisol production is prolonged, its effects on the human body can become deadly. It can cause hyperglycemia, brain damage, weakening of the immune system, weight gain, diabetes, high blood pressure, and other complications. It actually begins to shut down immunity, digestion, healthy endocrine function ... The bottom line is this: Prolonged Cortisol production in our bodies eventually causes death.