Synthetic marijuana (some street names include: sK2, diamond, Genie, Dawn, Spice) was never tested in humans, but used for research. It does decrease the flow of oxygen there by mimicking marijuana “high.” Can be smoked mixed with food/drink, it’s banned in many countries but not US at present.
A published study Philadelphia’s Children’s National Health System found in teenagers use can cause serious heart complications. No matter your age low oxygen levels are potentially catastrophic. This would be true even for the young.
Symptoms will include shortness breath, chest pain to name two.
The Partnership for Drug-Free America, Arizona chapter published a one page Marijuana Fact Sheet that you must read! Get the lowdown on synthetic marijuana, it is important!