Hand pain can be caused by disease or injury affecting any of the structures in the hand, including the bones, muscles, joints, tendons, blood vessels, or connective tissues. Hand pain is one feature of joint inflammation (arthritis) that may be felt in the hand.
Marijuana and the Eyes. Marijuana has a few key effects on the eyes. One of the most noticeable occurs shortly after smoking the drug: redness of eyes. THC in marijuana lowers blood pressure which dilates the blood vessels and increases blood flow throughout the body.
Due to the marijuana effects on the brain, there are many marijuana psychological effects as well. The primary desirable marijuana psychological effect is that of feeling high.. Marijuana effects on the brain create a high associated with: 1  Feelings of intoxication and detachment.ver 400 active compounds have been found in the cannabis plant, 60 of which are unique to marijuana. The chemical compounds found in cannabis are collectively known as cannabinoids. Marijuana affects the brain primarily through the psychoactive compound delta-9-tetrahydrocannanbinol (THC), referred to as THC.