Furthermore, studies have highlighted that ROS can activate the sympathetic nervous system (120), suggesting that the sympathetic nervous system may be less inhibited under high oxidative stress
In contrast, other hairs underwent double transitions and reversions, meaning the hair began dark, started to gray, then re-pigmented again
The unblinded randomization schedule will be kept as a secure spreadsheet accessible only to the study manager (employed by the sponsor) and by the data center coordinating the eCRF
Such a study requires a drug which is practically specific for one condition whose prevalence is known, and the one which approximates most closely to this appears to be vitamin B12
However, they conclude a long-term study with repeated administration is needed for a definitive conclusion [124]
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