Cannabis Studies

Cannabis for Chronic Symptoms and Medical Conditions

929 Studies on Cannabis for 175 Conditions
From 1971 - 2017
How Ratings Work


Acne
6 studies — 2008 - 2016


1.2

Addiction to Crack or Cocaine
6 studies — 1999 - 2017


2.8

Addiction to Heroin
13 studies — 1976 - 2017


2.7

Addiction to Methamphetamine
5 studies — 2004 - 2016


1.6

Addiction to Nicotine
17 studies — 1994 - 2017


2.8

Addiction to Opiod Based Pain Killers
25 studies — 1976 - 2017


2.8

Age-Related Macular Degeneration
3 studies — 2006 - 2014


1.0

Aging
6 studies — 2006 - 2017


2.3

Alcohol Dependence / Abuse
13 studies — 2002 - 2017


2.7

Alcoholic Steatohepatitis
1 study — 2017


2.0

Alzheimer's Disease
28 studies — 1997 - 2017


2.4

2.5

Anorexia and Cachexia
14 studies — 1991 - 2017


2.5

0.0

Anxiety
19 studies — 2005 - 2017


2.9

Arthritis
4 studies — 2000 - 2011


2.2

Asthma
11 studies — 1974 - 2016


2.6

Atherosclerosis
8 studies — 2006 - 2017


1.6

3.2

Autism
6 studies — 2011 - 2017


2.5

Bladder Cancer
1 study — 2015


3.0

Bone Cancer
3 studies — 2008 - 2010


2.7

Brain Cancer
27 studies — 1998 - 2017


1.8

Breast Cancer
22 studies — 1998 - 2016


1.4

Cancer (metastatic)
8 studies — 2010 - 2017


1.1

Cancer-Induced Night Sweats
1 study — 2008


3.0

Cardiac Fibrosis
1 study — 2016


2.0

Cervical Cancer
4 studies — 2004 - 2016


1.0

Chagas Disease (Trypanosoma cruzi)
2 studies — 2013 - 2016


1.5

Chemotherapy-Induced Nausea and Vomiting
42 studies — 1975 - 2017


3.7

2.0

Cholangiocarcinoma
1 study — 2010


1.0

1.5

2.0

2.0

2.5

Colon Cancer
11 studies — 2005 - 2016


1.3

Cough
5 studies — 1976 - 2016


2.4

Crohn's disease
3 studies — 2013 - 2016


3.3

Cystitis (Interstitial)
1 study — 2003


3.0

Depression
25 studies — 1995 - 2017


2.7

Dermatitis (Allergic, contact)
4 studies — 2007 - 2016


2.0

Dermatitis (Eczema)
4 studies — 2009 - 2017


2.8

Diabetes Mellitus
23 studies — 2001 - 2016


2.6

Dravet syndrome
7 studies — 2013 - 2017


2.7

Dupuytren's Contracture
1 study — 2016


2.0

Emotional and Behavioral Disorders (EBD)
6 studies — 2004 - 2015


2.8

Encephalitis
2 studies — 2013 - 2016


3.0

Encephalomyelitis
2 studies — 1998 - 2016


3.0

Endometriosis
3 studies — 2010


1.7

Epilepsy
35 studies — 1980 - 2017


2.8

Excitotoxicity
2 studies — 2011 - 2017


1.0

Familial Mediterranean Fever
1 study — 1997


5.0

1.5

4.0

Fever
3 studies — 2006 - 2016


2.7

Fibromyalgia
4 studies — 2007 - 2017


4.2

Fractured Bones
4 studies — 2005 - 2015


2.2

Fungal Infection (Candida albicans)
2 studies — 2009 - 2014


-1.5

1.0

Gastric Cancer
1 study — 2016


1.0

Gastro-Esophageal Reflux Disease (GERD)
3 studies — 1996 - 2016


3.3

Glaucoma
10 studies — 1971 - 2016


2.2

Graves' Disease
1 study — 2016


4.0

Hair Growth - Unwanted (Hirsutism)
2 studies — 2007 - 2009


1.0

Hair Loss (Baldness)
2 studies — 2007 - 2009


1.0

3.0

Heart Disease
15 studies — 2004 - 2017


2.0

Helminthiasis
3 studies — 1997 - 2016


2.0

Hepatic Ischemia/Reperfusion Injury
2 studies — 2007 - 2017


1.5

Hepatitis
9 studies — 2003 - 2014


1.0

Herpes
6 studies — 1980 - 2010


1.2

Hiccups (intractable)
1 study — 1998


3.0

HIV/AIDS
19 studies — 2005 - 2017


2.2

Huntington's Disease
35 studies — 1986 - 2017


2.1

Hypertension
10 studies — 1979 - 2017


1.9

Improved Night Vision
2 studies — 2004 - 2016


2.5

Infertility (male)
2 studies — 2016


1.5

2.0

Inflammatory Bowel Disease (IBD)
11 studies — 2006 - 2017


2.0

Insomnia
18 studies — 1973 - 2017


3.4

Itching (Pruritis)
5 studies — 2002 - 2016


3.0

Kaposi's Sarcoma
3 studies — 2007 - 2009


0.0

Kidney Cancer
2 studies — 2010 - 2016


2.0

Kidney Disease (Diabetic Nephropathy)
2 studies — 2010 - 2016


2.5

Kidney Disease (in General)
2 studies — 2010 - 2016


2.5

2.3

3.0

Kidney Failure (Hemodialysis)
2 studies — 2012 - 2016


2.0

Leishmaniasis
5 studies — 2008 - 2016


0.8

Lennox-Gastaut syndrome (LGS)
2 studies — 2015 - 2016


3.5

Leukemia
11 studies — 2005 - 2017


1.3

Libido
2 studies — 2007 - 2017


2.5

Liver Cancer
5 studies — 2006 - 2013


1.2

Liver Fibrosis
3 studies — 2005 - 2011


2.0

3.0

Lung Cancer
11 studies — 1975 - 2014


1.2

Lupus
1 study — 2008


1.0

Lymphoma
5 studies — 2000 - 2014


1.2

Malaria
3 studies — 1997 - 2015


1.3

1.6

Melanoma (Malignant Skin Cancer)
3 studies — 2008 - 2015


1.3

Migraine
7 studies — 1985 - 2017


3.3

Morning Sickness
1 study — 2006


3.0

Motion Sickness
2 studies — 2008 - 2010


2.0

1.0

Multiple Myeloma
1 study — 2016


1.0

Multiple Sclerosis (MS)
42 studies — 1981 - 2017


3.3

Myasthenia Gravis
2 studies — 1987 - 2006


2.0

Nausea and Vomiting
2 studies — 2005 - 2016


3.0

Neonatal Encephalopathy
1 study — 2016


2.0

Neonatal Hypoxia
3 studies — 2011 - 2016


2.0

Neuroblastoma
2 studies — 2014 - 2016


1.5

Neurodegeneration (in general)
10 studies — 2003 - 2017


2.0

3.0

Obesity
6 studies — 2011 - 2016


3.0

Obsessive-Compulsive Disorder (OCD)
2 studies — 2014 - 2016


2.0

Oral Cancer
1 study — 2010


1.0

Organ Transplant, Graft Rejection
5 studies — 2011 - 2015


2.4

Osteoporosis
5 studies — 2005 - 2016


2.0

Oxidative Stress
5 studies — 1998 - 2017


1.8

1.0

Pain (Acute)
13 studies — 1997 - 2017


2.5

Pain (Allodynia)
1 study — 2017


3.0

Pain (Chronic Non-Malignant)
27 studies — 2003 - 2017


2.9

Pain (Due to Advanced Cancer)
8 studies — 1975 - 2017


3.8

Pain (Menstrual)
1 study — 2003


3.0

Pain (Neuropathies, AIDS-Related)
3 studies — 2007 - 2011


4.3

Pain (Neuropathies, Diabetes)
3 studies — 2004 - 2015


3.3

Pain (Neuropathies, in general)
14 studies — 2003 - 2017


3.3

Pancreatic Cancer
4 studies — 2006 - 2008


1.2

Pancreatitis
5 studies — 2005 - 2017


2.6

Parkinson's Disease
31 studies — 2003 - 2017


2.5

Periodontitis
1 study — 2009


2.0

Pneumococcal meningitis
1 study — 1996


2.0

Post Ebola Syndrome
1 study — 2016


3.0

Post-Surgery Wounds
1 study — 2009


4.0

Post-Traumatic Stress Disorder
22 studies — 1996 - 2017


2.7

Pregnancy
1 study — 2016


4.0

1.5

Prostate Cancer
10 studies — 1999 - 2016


1.5

Psoriasis
6 studies — 2006 - 2017


1.7

Psychosis
6 studies — 2012 - 2017


1.8

Retinal Disease
6 studies — 2008 - 2016


2.3

Rhabdomyosarcoma
2 studies — 1993 - 2009


0.5

Rheumatoid Arthritis
7 studies — 2006 - 2015


2.9

Schizophrenia
11 studies — 2004 - 2017


3.2

Scleroderma
2 studies — 2016


2.0

Seborrhea
4 studies — 2008 - 2016


1.0

Sepsis
5 studies — 2008 - 2014


2.2

Sickle Cell Disease
2 studies — 2005 - 2010


2.5

Skin Cancer (Non-Melanoma)
3 studies — 2003 - 2017


3.7

Skin Diseases (in general)
4 studies — 2002 - 2009


2.5

Sleep Apnea
3 studies — 2002 - 2014


1.3

Spasticity (Pediatric)
1 study — 2016


4.0

Spinal Cord Injuries
8 studies — 1974 - 2017


3.8

Stress
33 studies — 1996 - 2017


2.7

Stroke
18 studies — 1998 - 2017


1.7

Sturge-Weber Syndrome
1 study — 2017


4.0

Systemic Sclerosis
2 studies — 2009 - 2010


2.0

Thyroid Cancer
2 studies — 2006 - 2010


1.5

Tourette Syndrome
13 studies — 1989 - 2017


3.7

Toxic shock syndrome
1 study — 2004


3.0

Trauma (physical)
1 study — 2017


3.0

Traumatic Brain Injury
4 studies — 2006 - 2017


1.5

4.0

Tuberculosis
1 study — 2016


2.0

Tuberous sclerosis complex
1 study — 2016


4.0

Urinary incontinence
3 studies — 2003 - 2006


4.7

Uveitis
3 studies — 2007 - 2014


1.7

Vascular Dementia
2 studies — 2006 - 2017


3.0

Wilson's Disease
1 study — 2005


3.0


The Cannabis Health Index
Combining the Science of Medical Cannabis with Mindfulness Techniques To Heal Chronic Symptoms and Diseases


Cannabis Health Index

This comprehensive sourcebook combines evidence-based insights from more than 1,000 studies from cannabinoid and consciousness research to present a convincing case for the powerful healing effects of medical marijuana on over 100 chronic symptoms and diseases. Written by a former paramedic with a PhD in alternative healthcare, this in-depth reference shows that the subtle shifts in awareness commonly observed in cannabis-using patients vastly contribute to these compounds' therapeutic potential.

Go to Symptoms & Conditions Buy the Book on Amazon

How Ratings Work

The rating for each medical condition is based on the average qualitative therapeutic value of cannabis as a treatment sourced from the results of clinical studies for that particular medical condition.


The rating points are on a scale of zero to five with zero indicating no observed therapuetic value and five indicating significant and demonstrably scientific therapuetic value. It is the total value points of each study divided by the number of studies conducted for that condition.


More information about each rating and condition can be found in the Cannabis Health Index.



One Point

Possibility of efficacy for cannabis in treatment of this condition.


Two Points

Possible to probable range of efficacy of cannabis for treatment of this condition.


Three Points

Likely probability of the efficacy of cannabis for treatment of this condition.


Four Points

Probability toward demonstrable efficacy of cannabis for treatment of this condition.


Five Points

Demonstrable efficacy of cannabis for treatment of this condition.


Uwe Blesching, PhD

Uwe Blesching, PhD

Uwe Blesching, is medical journalist and regular contributor in the fields of the cannabinoid science, Mind-Body Medicine, phytopharmacology, as well as evidence-based illness prevention and treatment protocols.

In addition to his life-long passion for Integrative Medicine, his latest book the Cannabis Health Index is informed by Blesching's rigorous in depth research and twenty years experience in emergency medicine as a Paramedic for the City of San Francisco.

He holds a BA in Humanities from the New College of California; an MA in Psychology and a PhD in Higher Education and Social Change from the Western Institute for Social Research.