Ammonia is a waste product made by the body during protein digestion and can be made by certain pathogens common in Hashimotos
A 2020 study on mice found that iron restriction decreased ovary function, follicle development, and fertility
Neuroreport 13:10671070 Gordon PH, Moore DH, Miller RG et al (2007) Efficacy of minocycline in patients with amyotrophic lateral sclerosis: a phase III randomised trial
Along this line, it has been hypothesized that decreased levels of GSH, which have been detected in post-mortem brains of parkinsonian patients at the cellular level, are likely to affect mitochondrial functions via loss of mitochondrial GSH
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In addition to this, there are some medical conditions like pernicious anemia or gastrointestinal disorders, where malabsorption is the main problem