Cannabis Medical Use Index
Strains and cannabinoids organized by condition — anxiety, pain, sleep, PTSD, nausea, and more. Based on user reports and available research.
Anxiety
Cannabis has a complex relationship with anxiety. High-THC strains can worsen anxiety in some users while providing relief in others. CBD-dominant strains are most reliably anxiolytic.
- ✓High CBD content (5%+)
- ✓Low to moderate THC (under 15%)
- ✓Terpenes: Linalool, Limonene, Caryophyllene
- ✓1:1 or higher CBD:THC ratios
- ✓Micro-dosing THC (2–5mg)
- ×Very high THC (20%+) without CBD
- ×Stimulating sativa-dominant if sensitive
- ×Edibles (harder to dose accurately)
Chronic Pain
The #1 medical cannabis use. THC activates CB1 receptors that modulate pain, while CBD and caryophyllene reduce inflammation at the source.
- ✓Balanced THC:CBD ratios
- ✓Indica-dominant for body pain
- ✓Terpenes: Caryophyllene, Myrcene, Humulene
- ✓Topicals for localized pain (CB2 receptors in skin)
- ×Pure CBD alone may be insufficient for severe pain
- ×Daytime high-THC affecting daily function
Insomnia & Sleep
Cannabis reduces sleep onset time. CBN (formed as THC ages) is strongly sedating. However, regular high-THC use suppresses REM sleep over time.
- ✓High myrcene content
- ✓Indica-dominant strains
- ✓CBN-rich products
- ✓Terpenes: Myrcene, Linalool, Caryophyllene
- ×Sativa-dominant strains
- ×Stimulating terpene profiles (limonene, pinene)
- ×Using nightly long-term — reduces REM sleep
Depression
Cannabis can provide temporary mood elevation but heavy daily use is associated with worsened depression over time. Strategic use of uplifting strains can help.
- ✓Limonene-rich strains (uplifting)
- ✓Balanced or moderate THC
- ✓Pinene for mental clarity with mood lift
- ✓CBD for baseline mood support
- ×Heavy daily use (may worsen long-term)
- ×High-THC indicas (can increase sedation/low mood)
PTSD
One of the most promising areas for medical cannabis. The endocannabinoid system regulates fear extinction. THC can suppress nightmares and reduce hyperarousal. Several US states list PTSD as a qualifying condition.
- ✓Moderate THC for nightmare suppression
- ✓CBD for daytime anxiety component
- ✓Myrcene and linalool for calming hyperarousal
- ×Very high THC that triggers paranoia (counterproductive)
- ×Stimulating strains that increase hyperarousal
Nausea & Vomiting
THC's anti-nausea effects are so well-established that synthetic THC (Marinol) has been FDA-approved since 1985. Cannabis activates CB1 receptors in the brain's vomiting center.
- ✓Any THC-containing strain
- ✓CBD enhances via 5-HT1A receptors
- ✓Fast-acting inhaled methods for acute nausea
- ×Edibles for acute nausea (too slow)
- ×Harsh smoke if nausea is already severe
Inflammation
Multiple anti-inflammatory mechanisms: CBD reduces inflammatory cytokines, caryophyllene binds CB2 receptors, humulene acts similarly to dexamethasone (a steroid) in studies.
- ✓High CBD for systemic inflammation
- ✓Caryophyllene-rich strains (CB2 activation)
- ✓Humulene terpene
- ✓CBG for IBD
- ✓Topicals for joint/localized inflammation
- ×Smoking (introduces inflammatory compounds from combustion) — vaporize or use edibles/topicals