Amphetamines ;) https://pubmed.ncbi.nlm.nih.gov/7661838/ https://pubmed.ncbi.nlm.nih.gov/7661838/ Of course, their use has been blamed for other issues, e.g.

Amphetamines ;) https://pubmed.ncbi.nlm.nih.gov/7661838/ https://pubmed.ncbi.nlm.nih.gov/7661838/ Of course, their use has been blamed for other issues, e.g. https://en.wikipedia.org/wiki/Tarnak_Farm_incident https://en.wikipedia.org/wiki/Tarnak_Farm_incident