 Wiley has developed her own version of BHRT known as the Wiley Protocol, though she has been strongly criticized for lacking the relevant credentials and potentially putting women at risk with an unproven, untested intervention that uses possibly dangerously high doses of hormones.Wiley's main thesis in "Lights Out" is that light is a physiological trigger that controls dopamine and hormones like cortisol.Wiley posits that with the extension of the natural day through artificial lighting, rest at the hormonal level is rarely adequate for optimum biological needs of the body.