Long Lasting Cognitive and Physical Impairment After Recreational Use of the Semisynthetic Cannabinoid Hexahydrocannabinonyl (HHC C9): A Case Report What Is HHC? What You Need To Know Health Effects of Vaping Smoking and Tobacco Use CDC Technical report: Hexahydrocannabinol (HHC) and related substances I heard voices screaming in my head. It was terrifying., Figures from the Health Research Board show that since the beginning of last year, 169 young people sought treatment for problems with Vaping harmless. Chemicals like formaldehyde, arsenic, lead, chromium, and nickel are found in vape aerosol. They damage lungs. They harm developing brains. They raise cancer risks. Protect