Elimination half-life

Hello, I wanted to conduct a process of elimination to find out what ingested chemicals would cause staining to both hair ... I want to find this out is because a friend of mine's fingernails (up to about halfway, faded, so I am told) and hair (affected area size unknown) reflect UV light, ...

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... she still has a few symptoms, the allergist is thinking of doing an elimination diet. We'll see what happens. To summarize, though, her bloating has gone down by about half of what it was. Her mental focus has improved. She's been going to a tutor after ...

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