I am 27 years old, and for the past couple years i have been feeling weaker and weaker, and a couple times when i get up, or while im just walking around my vision blacks out and i have to lean on somthing so i dont fall over. now i am a smoker, and do smoke marijuana, but i have been smoking marijuana for years and this never happened before.
Hello and welcome to Chat Doctor, Feeling weak and experiencing black-outs after getting up occurs due to reduced blood supply to the brain. Reduced blood supply can occur due to vaso-vagal syncope, obstruction, spasm of blood vessels etc. I suggest you to consult your primary healthcare provider for clinical assessment and relevant investigations. Thanks and take care Chat Doctor.