>>21670043serotonin, the chemical that psychadelics mimick, has similar effects in higher quantities
mdma and dxm both interact with serotonin levels in the body
when you die, your brain undergoes a cascade of chemical reactions which includes pumping a shit ton of serotonin through your system, along with other compounds including dmt (people say its bullshit but the reality is that its been proven in mice, and you'd have to be coping to say it without a doubt doesnt happen in humans)
this cascade of chemicals is what causes the "light at the end of the tunnel" that you see when you're about to die
when you smoke dmt, the effect is so strong that it mimicks this cascade and causes you to experience the feeling of accelerating into a tunnel and breaking through into an impossible world of geometry outside of time, experiencing emotions far more profound than what a sober brain is capable of
the experience is so profound that it can turn hard athiests into zealous believers, stop addiction to various drugs, alcohol, or tobacco, and completely change a persons world view