How Opiates Affect the Nervous System
As America suffers from the weight of a staggering drug problem, there’s been increasing attention given to the opioid epidemic. Opioids are a class of medicines that include prescription painkillers like Vicodin and OxyContin, and the term is also used for heroin as well.
While the use of prescription painkillers, in particular, is on the rise, there are still many common misunderstandings people have about these drugs. A big part of helping to address the issue can come down to exploring how opiates affect the nervous system and the rest of the body. There’s a dangerous misconception that because a doctor prescribes most opioids, they are somehow safe, and that’s completely untrue. Dispelling that myth is a key component of addressing the opioid crisis happening right now.
Opioids get their name from the opium poppy plants, but many of today’s prescription painkillers are actually synthetic or semi-synthetic. Our body creates its own molecule-like substances that impact how the brain and nervous system work. When your body creates opioid-like molecules, they bind to certain receptors, sending messages that can help block pain, calm the body during stress, and shape how a person experiences reward and pleasure.
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Synthetic opiates bind to opioid receptors on neurons that control dopamine release. This triggers an unnaturally high rush of dopamine, equivalent to about 10 times the amount that occurs naturally. This trains the body to take opioids over and over again. Over time, the body builds up a tolerance, which means that a person needs higher and higher doses of opioids to produce the same euphoric and pain-relieving effects.
Despite the desirable effects of these drugs, there are other less desirable side effects that indicate how opiates affect the nervous system. For example, the activation of some of the same pathways can lead to feelings of nausea and confusion as well as sedation.
It’s also important to note that opiates are central nervous system depressants. They impact the areas of the CNS that control necessary and vital functions, including breathing. When someone takes opiates it slows their respiration rate. If someone takes too much or combines opiates with other substances, like alcohol, their respiration can slow so much they go into a coma or stop breathing altogether. This is how opiates affect the nervous system in a way that also creates a high risk of overdose.
Also pertinent to how opiates affect the nervous system is the concept of addiction and dependence. Not all people who use opioids will become addicted, but the more someone uses them, the more their brain becomes wired to want to continue repeating that action.
When younger people begin experimenting with opiates, they’re at a greater risk of becoming addicted. This is because the reward pathways in their brain are still developing. If an adolescent alters the structure of their brain by taking opiates during this key stage of development, it can impact them for the rest of their life.
Opiates affect the nervous system in three key ways: they lower levels of consciousness, impact thought processes and cognition and cause dependence over time. Opiates influence nearly every aspect of the nervous system, which can potentially have detrimental effects on a person’s brain, body and life.