By now, most of us have seen the shocking before and after pics of people addicted to methamphetamines. Exactly what is happening inside each cell to cause such striking changes to a person’s face and body? Meth, scientists from the Italian Institute of Technology and UC Irvine say, causes abnormalities in the fat metabolism of cells and this triggers a rise in a type of molecule which promotes cell death.

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via Meth Effects: The Ravaged Faces Of Meth Result From Increase In Molecules Causing Cell Death.