"LSD also gave me recurring intrusive thoughts for about 5 years after taking it."There are definitely risks, but also ways to minimize the chance of negative effects and to constructively handle them afterwards.
All too many people go in strong psychedelic sessions with little preparation, in very poor settings, without experienced people they respect and trust around, and often even without knowing the substance or the dose of what they're taking.
If there are negative effects during the trip they don't know how to handle them, and many are lost as to what to do afterwards, and don't take advantage of support offered by trained psychedelic therapists or even ordinary psychologists.
It's a formula for increasing the odds of trauma and subsequent PTSD.
If anyone is considering taking psychedelics, please, please educate yourself thoroughly on them and how to use them constructively, test them, and know with certainty the dose you are taking, and take them only with experienced people you like and trust.
James Fadiman's Psychedelics Explorers Guide*[1] is a great resource for this.
[1] - https://www.amazon.com/Psychedelic-Explorers-Guide-Therapeut...