Central Nervous System
When you inhale marijuana smoke into your lungs, it doesn’t take long for THC to enter your bloodstream. From there, it is quickly transported to your brain and the rest of your organs. When you get marijuana from food or drink, it is absorbed a little more slowly.
THC triggers your brain to release large amounts of dopamine, a naturally occurring “feel good” chemical. That’s what gives you a pleasant “high.” It may heighten your sensory perception, as well as your perception of time. THC changes the way you process information, so your judgment may be impaired. It may also be difficult to form new memories when you’re high.
Changes also take place in the cerebellum and basal ganglia, upsetting your balance, coordination, and
reflex response. All those changes mean that it’s not safe to drive. Very large doses of marijuana or high concentrations of THC can cause hallucinations or delusions.
According to researchers, there may be an association between marijuana use and some mental health problems like depression and anxiety but more research is needed to understand the connection. In people who have schizophrenia, marijuana use can make symptoms worse.
When you come down from the high, you may be tired or feel a bit depressed. In some people, marijuana can cause anxiety. About nine percent of marijuana users develop an addiction, according to researchers. Symptoms of withdrawal may include irritability, insomnia, and loss of appetite.
In young people whose brains are not yet fully developed, marijuana can have a lasting impact on thinking and memory skills. If you use marijuana when pregnant, it can affect the brain of your unborn baby. Your child may be more prone to trouble with memory, concentration, and problem-
THC can lower pressure in the eyes, which can ease symptoms of glaucoma for a few hours. According to the American Academy of Ophthalmology, more research is needed to understand the active ingredients in marijuana and whether or not it’s a good treatment for glaucoma.
The pharmacologic effect of marijuana extends throughout the central nervous system. It is thought to ease pain and inflammation. It may also be of use in controlling spasms and seizures.