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Cannabis in California: Popular, Legal, and Still Misunderstood
Since California became the first state to legalize medical marijuana in 1996 and later adult-use in 2016, cannabis use has become increasingly mainstream. About one in three adults in California reports using cannabis regularly. But despite its widespread acceptance, many people still underestimate the risks.
Is weed really bad for you? The answer depends on how much, how often, and why you’re using it. While cannabis may be less harmful than alcohol or tobacco in many ways, it is not risk-free—especially for certain groups.
The Health Risks You Might Not Hear About
Cardiovascular Effects
Recent research from UCSF found that regular cannabis use (even edibles) can impair blood vessel function by over 40%, raising the risk for heart disease and stroke. Smoking or vaping cannabis has also been linked to increased heart attack risk, especially in younger adults.
Mental Health and Brain Function
Heavy or long-term use, particularly with high-THC products, has been associated with:
- Increased risk of anxiety and depression
- Cannabis-induced psychosis (especially in teens and young adults)
- Memory and attention issues that may persist with long-term use
Psychosis is one of the more serious concerns linked to cannabis. Studies show that regular or high-potency THC use may raise the risk of developing psychotic disorders, especially in individuals with genetic predisposition or early-life use. Learn more about cannabis and psychosis in our dedicated article.
Cannabinoid Hyperemesis Syndrome (CHS)
Some frequent users experience CHS, a condition marked by severe nausea, vomiting, and abdominal pain that can only be relieved by stopping cannabis use. Emergency room visits for this condition have spiked in California in recent years.
Driving Under the Influence
Cannabis impairs coordination and reaction time, doubling the risk of car accidents. In California, cannabis-related traffic fatalities have increased since legalization, particularly among young drivers.
Liver Impact of CBD Oils
A recent study suggests that even low doses of CBD may negatively impact liver function over time, particularly because the liver must work harder to process the oils, fats, and carrier compounds. While CBD is often marketed as "non-intoxicating" and safe, it's important to use it under medical guidance, especially if you have existing liver conditions.
How It Compares: Weed vs. Alcohol and Tobacco
Legal ≠ Harmless
Legalization has made cannabis more accessible, but it hasn’t eliminated its risks. Just like with alcohol or prescription medications, responsible use matters. People with heart conditions, mental health concerns, or who are pregnant should talk to their doctor before using cannabis.
And for teens and young adults, waiting until the brain fully develops (around age 25) can help reduce long-term effects.
When to Talk to a Doctor
- You use cannabis daily or to cope with stress
- You're experiencing nausea, anxiety, or brain fog
- You have a personal or family history of heart disease or mental health conditions
Our primary care providers at BASS Medical Group can help you understand the risks, review safer alternatives, and support your overall well-being.
Have questions about cannabis and your health?
Schedule an appointment with a BASS provider today.
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