DMT production (or even existence) in the brain hasn't been conclusively demonstrated, but it has been found in other human tissue, so it is produced somewhere

DMT production (or even existence) in the brain hasn't been conclusively demonstrated, but it has been found in other human tissue, so it is produced somewhere in the body. Dr. Rick Strassman (who has written books on specifically this subject) seems to make a good case for its production in the brain, but you're right that it isn't accepted as scientific fact yet.