Differences in product documentation, third-party testing visibility, and regulatory status can also vary between sellers
The typical treatment is supplementation with oral betaine, folic acid, vitamin B6, and vitamin B12.7,9 MTR The MTR enzyme catalyzes the regeneration of methionine from homocysteine
Impaired Fe-S cluster synthesis leads to iron retention in the mitochondrial matrix, where it catalyzes Fenton reactions generating highly toxic hydroxyl radicals
Chem Senses 22 , 383390 (1997)
Whats more likely is that these famous historical figures went grey gradually while on the run, on trial, or imprisoned, and their change of hair colour was suddenly revealed to the world when they emerged to be publicly executed