Why Does It Hurt Your Head After Smoking Weed?

While many cannabis users are familiar with common side effects like dry mouth and increased appetite, a less discussed issue is the headache some people experience after using marijuana. Although there is limited scientific evidence directly linking cannabis to headaches, some users report suffering from severe headaches post-consumption. This blog post explores whether cannabis can trigger headaches and offers tips on how to prevent them.

Understanding the Cannabis Hangover

The term “cannabis hangover” is often used to describe the discomfort or headache that can follow excessive marijuana use. Unlike alcohol, which is known for its toxic effects and potential for overdose, cannabis is considered non-toxic with no known cases of fatal overdose. However, some users do report experiencing a “marijuana migraine,” which is believed to be related to the constriction of microscopic blood vessels in the brain.

Debunking the Dehydration Myth

Dehydration is a well-known cause of headaches, and many believe that cannabis might cause dehydration due to the dry mouth or “cottonmouth” commonly experienced after smoking. However, research does not support the idea that cannabis causes dehydration. Cottonmouth occurs because cannabis temporarily impairs salivary gland function, not because of a lack of overall body hydration.

Cannabis and Headaches: The Evidence

Interestingly, multiple studies suggest that cannabis might actually be beneficial for headache relief. For example:

• 2016 Study: Found that cannabis use significantly reduced the frequency of migraines. Among 121 adult migraine sufferers, the average number of migraines per month dropped from 10.4 to 4.6. Nearly 85% of participants reported fewer migraines, and only 12% found no effect from cannabis.
• 2017 Study: Confirmed that patients experienced a reduction in migraines per month after using cannabis.

These findings indicate that cannabis could be effective in managing migraines for some users. Most participants in these studies reported using various forms of marijuana daily for prevention and acute treatment of migraines.

What to Do If You Experience a Weed-Related Headache

Although direct evidence linking cannabis to headaches is limited, certain factors associated with marijuana use might contribute to headaches:

1. Stay Hydrated: One of the simplest ways to avoid a headache after using cannabis is to stay well-hydrated. Drink plenty of water before, during, and after consuming marijuana to prevent dehydration, which can lead to headaches.
2. Avoid Excessive Salt: Consuming too much salt while high can also lead to dehydration, as salt can draw water out of your body’s cells. Opt for healthier snacks and monitor your salt intake.
3. Protect Against Sun Exposure: If you’re using cannabis outdoors, be mindful of sun exposure. Prolonged exposure to sunlight can dehydrate you quickly. Ensure you drink water and seek shade when needed.

Final Thoughts on Cannabis and Headaches

While there is no conclusive evidence that cannabis itself causes headaches, dehydration and other related factors might contribute to the discomfort some users experience. Staying hydrated, avoiding excessive salt, and protecting yourself from sun exposure can help prevent headaches.

In summary, if you experience a headache after smoking marijuana, it’s likely not the cannabis itself causing the issue. Instead, consider other factors such as hydration levels or environmental conditions. By taking these precautions, you can enjoy your cannabis experience without the added discomfort of a headache.