"I am having a BBL in 3 weeks and I want to know what food to eat to help support blood flow to avoid any complications and faster healing "
All of the plastic surgery websites and blogs concerning cannabis use all seem to support STOPPING cannabis use pre-op, especially anything involving cannabis inhalation, for at least several weeks before the procedure. At least what I can find in the scant data on this subject, there are concerns ranging from airway concerns given general anesthesia/ endotracheal use during the surgery as well as as concerns about wound healing. In terms of using cannabis post-op for issues like nausea and pain, this seems to be a grey area that would benefit from discussion w/ your BBL surgeon. Best of Luck!
drpark