Abstract
Cigarette smoking has been reported to produce acute increases in plasma ACTH and cortisol, but the effect of chronic smoking on integrated adrenal steroid production has not been studied. The effects of chronic smoking on 24-hour urinary-free cortisol, 11-deoxycortisol, DHEAS, and 17-keto-steroids were studied in 10 premenopausal smokers, and their results were compared with 15 premenopausal nonsmokers. The 24-hour excretion of urinary-free cortisol (85.0 +/- 40.8 nmol/d in smokers versus 81.7 +/- 49.7 nmol/d in nonsmokers), 11-deoxycortisol (259 +/- 170 nmol/d in smokers versus 222 +/- 147 nmol/d in nonsmokers), DHEAS (3,140 +/- 2,909 nmol/d in smokers versus 2,890 +/- 1,960 nmol/d in nonsmokers), and 17-ketosteroids (17.4 +/- 8.3 mumol/d in smokers versus 23.4 +/- 19.9 mumol/d in nonsmokers) were similar in smokers and nonsmokers (all P values not significant). We conclude that chronic smoking does not result in abnormal levels of 24-hour urinary-free cortisol.
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