serum levels of prolactin, thyrotropin. thyroid hormones, trh responsiveness, and male reproductive function in intermittent islamic fasting

نویسندگان

fereidoun azizi department of endocrine research center, shahid beheshti university of medical sciences, tehran, iran.

چکیده

during the islamic lunar month of ramadan millions of muslims abstain from drinking and eating from dawn to sunset. the objective of this study was to investigate the effect of intermittent islamic fasting on reproductive function, hypothalamic-pituitary-thyroid axis and the peripheral metabolism of thyroid hormones in men. we measured serum levels of fsh. lh, testosterone, prolactin, fsh, t4 and t3 uptake, and prolactin and tsh responses to trh, before, at 10th, 20th and 29th days of ramadan and four weeks after fasting month was terminated. subjects were nine healthy men who fasted 17 hours a day for 29 days. there were no significant changes in serum levels of any of measured hormones during ramadan. prolactin and tsh responses to tr h were also unaltered. the only positive finding was increased serum t4 of 1.5 to 2.8 pg/di and increased free t4 index (ff41) in five of nine subjects in the last days of ramadan. we conclude that 1) intermittent abstinence from food and drink for 17 hr a day, as is observed in islamic fasting, does not alter male reproductive function, hypothalamic-pituitary-thyroid axis, or peripheral metabolism of thyroid hormones. 2)1 some subjects slight increase in serum t4 may occur in the last days of ramadan.

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منابع مشابه

SERUM LEVELS OF PROLACTIN, THYROTROPIN, THYROID HORMONES, TRH RESPONSIVENESS, AND MALE REPRODUCTIVE FUNCTION IN INTERMITTENT ISLAMIC FASTING

During the Islamic lunar month of Ramadan millions of Muslims abstain from drinking and eating from dawn to sunset. The objective of this study was to investigate the effect of intermittent Islamic fasting on reproductive function, hypothalamic-pituitary-thyroid axis and the peripheral metabolism of thyroid hormones in men. We measured serum levels of FSH, LH, testosterone, prolactin, TSH,...

متن کامل

SERUM LEVELS OF PROLACTIN, THYROTROPIN. THYROID HORMONES, TRH RESPONSIVENESS, AND MALE REPRODUCTIVE FUNCTION IN INTERMITTENT ISLAMIC FASTING

During the Islamic lunar month of Ramadan millions of Muslims abstain from drinking and eating from dawn to sunset. The objective of this study was to investigate the effect of intermittent Islamic fasting on reproductive function, hypothalamic-pituitary-thyroid axis and the peripheral metabolism of thyroid hormones in men. We measured serum levels of FSH. LH, testosterone, prolactin, FSH, T4...

متن کامل

serum levels of prolactin, thyrotropin, thyroid hormones, trh responsiveness, and male reproductive function in intermittent islamic fasting

during the islamic lunar month of ramadan millions of muslims abstain from drinking and eating from dawn to sunset. the objective of this study was to investigate the effect of intermittent islamic fasting on reproductive function, hypothalamic-pituitary-thyroid axis and the peripheral metabolism of thyroid hormones in men. we measured serum levels of fsh, lh, testosterone, prolactin, tsh, t4, ...

متن کامل

Islamic Fasting and Thyroid Hormones

Copyright © 2015, Research Institute For Endocrine Sciences and Iran Endocrine Society. This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/) which permits copy and redistribute the material just in noncommercial usages, provided the original work is properly cited.

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عنوان ژورنال:
medical journal of islamic republic of iran

جلد ۶، شماره ۳، صفحات ۷۱-۷۴

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