More recent research points to THC being more effective at reducing nausea and vomiting than CBD.
A laboratory study found that CBD prevented human sebocytes from creating too much sebum in addition to having an anti-inflammatory effect, preventing inflammatory cytokines from activating. Because excessive sebum and inflammation are characteristic of acne, topical CBD could be an effective treatment for acne and may prevent or reduce future breakouts. 12,13
Unfortunately, few human trials investigating the use of CBD as a single agent to relieve pain exist, with most trials using a combination of CBD and THC to relieve pain. Notably, Health Canada has approved a combination medication that contains both THC and CBD in a 1:1 ratio for the relief of central nerve-related pain in multiple sclerosis, and cancer pain that is unresponsive to optimized opioid therapy.
8. Parkinson’s Disease
Conclusion: CBD is beneficial for treating certain types of epilepsy.
Pretreatment with 300mg CBD significantly relieved anxiety in 57 healthy males who undertook a simulated public speaking test. However, dosages of 150mg CBD and 600mg CBD did not make any difference to the men’s anxiety levels. 7
Anxiety scores decreased in a large case series of 72 patients, with 57 patients (79.2%) reporting decreased scores within the first month after CBD treatment. 9
Cannabis is a plant, and there are two main types, Cannabis Indica and Cannabis Sativa. Both marijuana and CBD can be derived from both types, but hemp is only derived from Cannabis Sativa. By law, hemp must contain no more than 0.3% THC (the oil in marijuana that gives you a high) to be called hemp, otherwise, growers are at risk of prosecution under federal law. Hemp is a great resource for making 100% biodegradable, environmentally friendly products such as clothing, packaging, biofuel, building materials, and paper.
CBD reduces effects on acne-prone skin by targeting cells that activate acne  . Unlike acne-oriented products and prescription meds, CBD oil actually targets problem-causing cells in acne-prone skin types. Hence, CBD helps the skin heal without causing dryness or irritation on your skin.
The primary ingredient in marijuana is delta-9-tetrahydrocannabinol (THC), but cannabidiol is obtained mainly from hemp. Hemp contains minimal amounts of THC.
6.1 Better Cholesterol Profiles
Summary: Partly Effective – Some academic research proves that CBD can help reduce the risk of obesity.
Luckily, the same way CBD oil has shown tremendous results for the inside of the body; it also does the same for the skin. People have started embracing CBD oil skin products due to their ability to fight inflammations and breakouts.
Several people who used topical applications of CBD and THC products have been well-documented to have cured melanoma and carcinoma-type skin cancers. A good example is Rick Simpson  who used cannabis oil to cure basal cell carcinoma. He now widely distributes a line of CBD products.
On the other hand, no studies have shown that CBD is harmful, says Debra Jaliman, MD , author of Skin Rules: Trade Secrets From a Top New York Dermatologist . While research into CBD’s usefulness in skin-care products is admittedly limited, some facts point to its potential benefits. “CBD has been shown to be rich in amino acids , [which] provide nutrients to nourish the hair, skin, and nails ,” Dr. Jaliman notes. "CBD’s also a powerful antioxidant . Antioxidants protect the skin by limiting the production of free radicals, which can damage skin cells. And CBD contains fatty acids , which help in keeping the skin healthy.”
Otherwise, the only disorder for which there is “conclusive or substantial evidence” that CBD is helpful is multiple sclerosis, according to a report published in January 2017 by the National Academies of Sciences, Engineering, and Medicine. (8) The same report found “moderate” evidence that CBD improves sleep in people with chronic pain and certain other conditions, and only “weak” evidence for supporting or disproving all other claims of CBD’s health effects.
The trouble is there’s scant scientific evidence to support most of those claims, and there’s still a lot of uncertainty about CBD’s potential side effects and even its legality. “Cannabidiol is the No. 1 new treatment people are asking about,” says Susana Galle, PhD , a psychologist, clinical nutritionist, and certified naturopath in Washington, DC. “But although there’s tons of talk about it and lots of products out there, there’s still not much evidence.”
Doctors React to News That States With Legal Marijuana Prescribe Fewer Opioids
“I’ll confess, I tried CBD, and my whole life I’ve been an adamant anti-drug person because people I’ve known and loved have ruined their lives with drugs,” Dr. Fielding says. “And I’ve been converted. It triggered a wonderful feeling of going from tension and pain and distress to feeling fine without altering me in any other way.”
“The animal data are very promising for a number of conditions, but rigorous randomized clinical trials have yet to be done,” says Kevin Hill, MD , director of the division of addiction psychiatry at Beth Israel Deaconess Medical Center in Boston and an assistant professor of psychiatry at Harvard Medical School in Boston. “That is one of the frustrating aspects of the current state of cannabis: There are many companies and states profiting from the sale of cannabis and cannabinoids, but those same companies and states are not putting financial resources toward advancing the science.”
In a nutshell, CBD interacts with the endocannabinoid system, a large messaging network in your body that plays a key role in regulating many physiological functions. In fact, cannabinoids are so essential to good health that your brain actually produces its own cannabinoids.
Although the FDA has not approved using CBD to treat any of those conditions, there are signs CBD could be beneficial.