Effects of Total Energy Withdrawal (Fasting) on the Levels of Growth Hormone, Thyrotropin, Cortisol, Adrenaline, Noradrenaline, T4, T3, and rT3 in Healthy Males

Ten days of total energy deprivation evoked the following endocrine changes in 12 healthy, normal‐weight males: early and marked reductions and increments in the blood levels of T 3 and reverse T 3 , respectively, with rapid returns to pre‐starvation levels after refeeding; a slight and late decrease in the blood levels of T 4 ; a minute reduction of the blood levels of TSH; a pronounced increase in the blood levels of growth hormone, but a...