Effect of mobile usage on serum melatonin levels among medical students.
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Date
2014-10
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Abstract
Exposure to extremely low frequency (ELF) electromagnetic radiations from mobile phones may affect the
circadian rhythm of melatonin in mobile users. The study was designed with objective to evaluate the
influence of mobile phone on circadian rhythm of melatonin and to find the association if any between the
hours of mobile usage with serum melatonin levels. All the volunteers medical students using mobiles for
> 2 hrs/day were included in high users group and volunteers who used mobile for ā¤ 2 hrs where included
in low users group. Both high and low users volunteers were sampled three times in the same day (Morning-
3-4 am, Noon 1-2 pm, Evening-5-6 pm) for estimation of serum melatonin levels. Comparsion of sernum
melatonin levels in high users and low users were done by Mann Whitney āUā Test. Reduced morning
melatonin levels (3-4 am) was observed in high users (> 2 hrs/day) i.e high users had a disturbed melatonin
circadian rhythm.There was a negative correlation between melatonin secretion and hours of mobile usages.
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Shrivastava Abha, Saxena Yogesh. Effect of mobile usage on serum melatonin levels among medical students. Indian Journal of Physiology and Pharmacology. 2014 Oct-Dec ; 58 (4) : 395-399.