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Fatigue often stems from mitochondrial dysfunction brought on by oxidative stress
Due to the presence of rhodopsin, the photon capture ability of the retina is significantly enhanced under blue light irradiation, leading to an increase in the number of light induced cell deaths

A variety of factors can put someone at risk for a nutrient deficiency, including: Inadequate diet Increased nutrient demands due to pregnancy, breastfeeding, and menstruation Decreased nutrient absorption from GI conditions like celiac and Crohn's disease Genetic mutations (like the MTHFR polymorphism) Lower bioavailability of some nutrients (e.g., zinc and iron) from plant versus animal sources Decreased synthesis of vitamin D from sunlight among individuals with dark-colored skin Common medications that impact nutrient absorption, metabolism, and excretion Aging, which can trigger changes (such as decreased stomach acid) that decrease vitamin D and B12 absorption Now let's explore seven common nutrient deficiencies that can impact metabolic health and the blood tests that check for these deficiencies

While many of the key regulators of this pathway remain largely unknown, recent studies have identified glutathione peroxidases, particularly glutathione peroxidase 4 (GPX4), as antioxidant enzymes that can prevent lipid peroxidation using reduced glutathione (GSH) as a co-factor 9,10