What Causes Red Eyes After Smoking Marijuana?

Ever wonder why so many people’s eyes are bloodshot after smoking marijuana?

Causes Red Eyes After Smoking Marijuana

It’s pretty much a dead giveaway they’ve been smoking¬†unless they have also been awake for the last 24 hours and have a standby excuse.

Many people carry some kind of eye product that reduces irritation – especially if after having indulged, are obliged to walk right into a crowd of people who are ‘straight’.
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If this situation sounds familiar to you, you’ve probably also learned the technique of looking at the ground, staring off into the distance, or examining the unusual cloud formations overhead – anything but looking someone right in the eye.

Since some people also suffer from a wee bit of paranoia in such circumstances, there could also be a misconception that everyone in the room notices bloodshot eyes, but what exactly causes it?

Increased blood flow

One of the main reasons for bloodshot eyes after smoking marijuana is that the active ingredient, tetrahydrocannabinol (THC). It actually lowers blood pressure and increases blood flow to the eyes.

Because blood pressure is lowered, the blood vessels and capillaries around the eye dilate, encouraging a greater flow of blood to the eyes. This lessened blood pressure is the same reason that marijuana is often used to treat glaucoma. But for someone trying to hide symptoms of smoking, it can get them busted unless they’re prepared, and have a vial of Visine to get the red out.
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Cannabinoid concentration

It actually isn’t the act of smoking that produces red streaks in the eyes, but rather the concentration of cannabinoids in what was smoked or ingested.

This means that you could eat a marijuana product high in cannabinoids and get flaming red eyes, but you could also smoke something which has a low cannabinoid concentration and be pretty much scott-free of redness.

Allergies could play a part

It’s also possible for some individuals to be allergic to cannabinoids and experience eye redness as a reaction, whether it’s from smoking or having ingested edibles.

However, most people who have this kind of allergic reaction do not experience it strictly in response to cannabinoids, but as a general response to smoking, or to tobacco, or even incense that could be burning in the same room.
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Get the red out

Your best bet to avoid irritation, is to stay at home of course, and just chill out amongst friends or to hang out alone.

If you do have to go out into some kind of social situation, make sure you have some eye drops on hand to reduce the irritation and redness.

Also, make sure to always smoke low-grade strains of marijuana, so your eyes aren’t significantly affected.