However, such studies are significantly affected by recall bias, and screen time is highly correlated with staying up late, psychological stress, and poor lifestyle habits, complicating the independent assessment of the effect of screen-based blue light ( Confounding and bias control in association studies Interpreting the association between ALAN and menstrual disturbances requires caution
Contact your GP if natural approaches have not yielded results after 3-6 months, or if you have diabetes, pre-diabetes, or obesity-related complications requiring assessment
Hypovitaminosis of vitamin C is defined as less than 23 mol/L, and deficiency as less than 11 } : CS1 maint: DOI inactive as of July 2025 (link) "Efficacy of topical vitamin C in melasma and photoaging: A systematic review"
[DOI] [PMC free article] [PubMed] [Google Scholar] 9.Kanoski S.E., Fortin S.M., Ricks K.M., Grill H.J