For enrollment, subjects had to demonstrate stable facial hyperpigmentation for at least 3 months, macular lesions that were neither depressed nor atrophic, and melasma severity scores of 2 or higher
152, 153 In humans, circulating NO concentration increases after the consumption of polyphenols
He also teaches thousands of health care practitioners about functional medicine and immunology, thyroid health, neurology, lab testing and more
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However, for concentrations exceeding three g/dl, dilution with a 0.1 M phosphate buffer at pH 7.0 was necessary to obtain reliable results
Springer Nature Singapore, pp 181214