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.
Glaucoma is a condition that increases pressure inside the eyeball and can lead to vision loss. Improves Lung Health Research in the Journal of the American Medical Association found that marijuana can increase lung capacity, not decrease it as many people have long believed.