4.8 million   
 

The number of veterans who have used psilocybin, LSD, or MDMA in their lifetime, according to a RAND Corporation report -- U.S. Veterans and Psychedelics: Prevalence of Use and Policy Preferences.

• Nearly one in four veterans supported the legal use of psilocybin mushrooms. The rates for LSD and MDMA were 11 percent and 9 percent, respectively.
   
• Veterans’ support for the legal use of psilocybin mushrooms, LSD, and MDMA was generally similar to nonveterans’ support. However, veterans were slightly more likely to support the legal use of psilocybin mushrooms and LSD than nonveterans of a similar age, gender, race, and ethnicity.
   
• Veterans were slightly more likely to have used LSD in their lifetime than nonveterans.
   
• Less than 1 percent of veterans had used ibogaine or iboga in their lifetime. About 5 percent of veterans who had never used ibogaine or iboga were willing to try it.
   
• Nearly half of veterans were unsure whether a veteran would risk losing VA benefits if they spoke to their VA doctors about the use of psilocybin mushrooms (48 percent) or MDMA (46 percent).
   
• About half of veterans supported VA providing or paying for psilocybin-assisted therapy (54 percent) or MDMA-assisted therapy (45 percent) if approved by the U.S. Food and Drug Administration.