This review highlights the critical role of micronutrientsespecially selenium, iodine, zinc, vitamin D, and ironin supporting thyroid function and modulating these pathogenic pathways
The confidence is remarkable given the near-total absence of clinical evidence behind most of it
Instead, it functions as a bacteriostatic agent
A separate meta-analysis that pooled results of trials in older adults with mild cognitive impairment found B-vitamin supplementation (6 to 24 months, depending on the trial) had no benefits on various cognitive parameters, including executive function, information processing speed, and episodic memory (90)
The reasons are far-reaching and include stress, physical issues, anxiety, and even too much coffee - sometimes, there is no simple explanation