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Effects of Total Energy Withdrawal (Fasting) on the Levels of Growth Hormone, Thyrotropin, Cortisol, Adrenaline, Noradrenaline, T 4 , T 3 , and rT 3 in Healthy Males

1977; Wiley; Volume: 201; Issue: 1-6 Linguagem: Inglês

10.1111/j.0954-6820.1977.tb15648.x

0001-6101

Jan Palmblad, L Levi, Albert Burger, Arne Melander, U Westgren, H. von Schenck, G. Skude,

Muscle metabolism and nutrition

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 T3 and reverse T3, respectively, with rapid returns to pre-starvation levels after refeeding; a slight and late decrease in the blood levels of T4; a minute reduction of the blood levels of TSH; a pronounced increase in the blood levels of growth hormone, but a return towards pre-exposure levels even before discontinuation of starving; a minor and gradual enhancement of the blood levels of cortisol, and an increase in nocturnal urinary adrenaline excretion. It is assumed that these changes reflect a complex regulatory mechanism, the purpose of which is to secure adequate energy supply to vital organs.