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Indeed, in another study in 22 USA free-living men by the same researchers, Se supplementation with even higher doses (300 g per day as high-Se yeast for 48 weeks) did not affect serum androgen levels or semen quality (sperm count, motility, progressive motility, or morphology), despite increased serum and seminal plasma Se concentrations, from 140 to 230 g/L, while sperm Se concentration even decreased (188)
These include: Stress Hormone fluctuations Missing sleep or changing your sleep schedule Coffee and other caffeine stimulants Alcohol Changes in the weather Changes to your diet Sensory triggers like light, sounds, and smell Dehydration Certain medications Triggers are very individual, and what affects one person may not affect another
pyruvate dehydrogenase and tricarboxylic acid cycle enzymes are sensitive targets of traumatic brain injury induced metabolic derangement
Sleep deeper & release serotonin
Zn also improves photosynthetic efficiency (Liu et al., 2015