CBD is not a cure-all – here’s what science says about its real health benefits

Over the last five years, an often forgotten piece of U.S. federal legislation – the Agriculture Improvement Act of 2018, also known as the 2018 Farm Bill – has ushered in an explosion of interest in the medical potential of cannabis-derived cannabidiol, or CBD.

After decades of debate, the bill made it legal for farmers to grow industrial hemp, a plant rich in CBD. Hemp itself has tremendous value as a cash crop; it’s used to produce biofuel, textiles and animal feed. But the CBD extracted from the hemp plant also has numerous medicinal properties, with the potential to benefit millions through the treatment of seizure disorders, pain or anxiety.

Prior to the bill’s passage, the resistance to legalizing hemp was due to its association with marijuana, its biological cousin. Though hemp and marijuana belong to the same species of plant, Cannabis sativa, they each have a unique chemistry, with very different characteristics and effects. Marijuana possesses tetrahydrocannabinol, or THC, the chemical that produces the characteristic high that is associated with cannabis. Hemp, on the other hand, is a strain of the cannabis plant that contains virtually no THC, and neither it nor the CBD derived from it can produce a high sensation.

As a professor and chair of the department of pharmacology at Penn State, I have been following research developments with CBD closely and have seen some promising evidence for its role in treating a broad range of medical conditions.

While there is growing evidence that CBD can help with certain conditions, caution is needed. Rigorous scientific studies are limited, so it is important that the marketing of CBD products does not get out ahead of the research and of robust evidence.

The primary concern about CBD marketing is that the scientific community is not sure of the best form of CBD to use. CBD can be produced as either a pure compound or a complex mixture of molecules from hemp that constitute CBD oil. CBD can also be formulated as a topical cream or lotion, or as a gummy, capsule or tincture.

Guidance, backed by clinical research, is needed on the best dose and delivery form of CBD for each medical condition. That research is still in progress.

But in the meantime, the siren’s call of the marketplace has sounded and created an environment in which CBD is often hyped as a cure-all – an elixir for insomnia, anxiety, neuropathic pain, cancer and heart disease.

Sadly, there is precious little rigorous scientific evidence to support many of these claims, and much of the existing research has been performed in animal models.

CBD is simply not a panacea for all that ails you.

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