Enduring effects of severe developmental adversity, including nutritional deprivation, on cortisol metabolism in aging Holocaust survivors

ObjectiveIn animal models, early life exposure to major environmental challenges such as malnutrition and stress results in persisting cardiometabolic, neuroendocrine and affective effects. While such effects have been associated with pathogenesis, the widespread occurrence of ‘developmental programming’ suggests it has adaptive function. Glucocorticoids may mediate ‘programming’ and their metabolism is known to be affected by early life events in rodents. To examine these relationships in humans, cortisol metabolism and cardiometabolic disease manifestations were examined in Holocaust survivors in relation to age at exposure and affective dysfunction, notably lifetime posttraumatic stress disorder (PTSD).MethodsFifty-one Holocaust survivors and 22 controls without Axis I disorder collected 24-h urine samples and were evaluated for psychiatric disorders and cardiometabolic diagnoses. Corticosteroids and their metabolites were assayed by gas chromatography–mass spectroscopy (GC–MS); cortisol was also measured by radioimmunoassay (RIA).ResultsHolocaust survivors showed reduced cortisol by RIA, and decreased levels of 5α-tetrahydrocortisol (5α-THF) and total glucocorticoid production by GC–MS. The latter was associated with lower cortisol metabolism by 5α-reductase and 11β-hydroxysteroid dehydrogenase (11β-HSD) type-2. The greatest decrements were associated with earliest age of Holocaust exposure and less severe PTSD symptomatology. Cardiometabolic manifestations were associated with decreased 11β-HSD-2 activity. In controls, 5α-reductase was positively associated with trauma-related symptoms (i.e., to traumatic exposures unrelated to the Holocaust).ConclusionExtreme malnutrition and related stress during development is associated with long-lived alterations in specific pathways of glucocorticoid metabolism. These effects may be adaptive and link with lower risks of cardiometabolic and stress-related disorders in later life.