128 citations,
January 1996 in “Journal of analytical toxicology.” Hair analysis can detect cocaine use but doesn't accurately show the amount or timing of use.
14 citations,
June 2020 in “Drug Testing and Analysis” A new method was created to measure metformin in hair, showing potential for monitoring treatment and medical investigations.
8 citations,
October 2014 in “Journal of analytical toxicology.” Chemical hair straightening significantly reduces detectable drug levels in hair.
59 citations,
November 2018 in “Psychoneuroendocrinology” Lower levels of certain brain chemicals are linked to worse PTSD symptoms in men.
36 citations,
March 2002 in “Journal of Biological Chemistry” Food deprivation increases MST enzyme in the brain, possibly affecting energy balance.