Dive in Trepenes
There are 146 known terpenes in cannabis, but experts have only linked a handful of them to specific effects:
- Beta-caryophyllene: A major ingredient in cloves, rosemary, and hops, beta-caryophyllene could be beneficial for managing symptoms of anxiety and depression.
- Beta-pinene: If you’ve strolled through a coniferous forest, you know the smell of beta-pinene, which could also have potentially both antidepressant and anticancerTrusted Source properties.
- Humulen: This terpene is found in ginseng, which has long been used in folk medicine for energizing effects.
- Limonene: One of the most commonly found terpenes, limonene has distinct citrus notes and may potentially have anticancer properties. In mice, it’s been shown to have anti-anxiety properties.
- Linalool: Lovers of lavender as aromatherapy may want to seek out cannabis with linalool, which may helpTrusted Source alleviate stress.
- Myrcene: Found in mangoes, myrcene has antifungal and antibacterial properties and could also have sedating effects.
While there are many terpenes in the natural world, scientists have only studied a handful.
Examples of better-known terpenes include:
Limonene
Limonene is a common terpene that most people can recognize by its scent. As the name suggests, limonene gives the rinds of fruits such as lemons and oranges their citrusy smell.
A study in Chemico-Biological Interactions notes that limonene contains the following therapeutic properties:
- anti-inflammatory
- antioxidant
- antiviral
- antidiabetic
- anticancer
Limonene appears to modulate the way certain immune cells behave, which may protect the body from a range of disorders. Limonene is also safe for people to take as a supplement.
Pinene
Pinene is another naturally abundant terpene. There are two forms of pinene: a-pinene and b-pinene. Pinene provides the fresh, bright scent of many plants, including pine needles, rosemary, and basil. Pinene may also have some therapeutic benefits.
Shirin-yoku, which means “forest bathing,” is a Japanese therapy that involves taking leisurely walks in the forest, soaking up the atmosphere, and enjoying the scent. Shirin-yoku may have preventive and restorative effectsTrusted Source on a person’s psyche and physiology.
A study in Acta Salus Vitae notes that the amount of pinene in the air of a healthy forest is enough to be therapeutic. Pinene acts as a bronchodilator, allowing more air into the lungs. It also has an anti-inflammatory effect and may fight against some infectious germs when inhaled.
Linalool
Linalool is most abundant in the lavender plant and gives the flower its rich scent. Linalool is one of the more important compounds in aromatherapy and is responsible for the calming effect many people get when smelling lavender or its essential oil.
A study in Colloids and Surfaces B: Biointerfaces notes that linalool may affect the body in a variety of ways due to a range of properties, including:
- anti-inflammatory
- antimicrobial
- neuroprotective
- antidepressant
- anticancer
- anti-anxiety
Linalool does appear to act on the body, but researchers must study its effects further to understand how people can use it to benefit their health.
Myrcene
Myrcene is a terpene commonly found in plants such as hops, lemongrass, and thyme. The flowers of the cannabis plant also contain myrcene.
Myrcene is a powerful antioxidant. One study Trusted Source in mice concludes that myrcene could help protect the brain from oxidative damage following a stroke.
Another study in mice found that myrcene had a similar protective effect in heart tissue. The researchers note that myrcene may be a useful alternative treatment after ischemic stroke.
However, it is important to bear in mind that these studies used very high concentrations of myrcene, up to 200 milligrams (mg) per kilogram (kg) (mg/kg) of weight.
Another studyTrusted Source in a cell model of osteoarthritis noted that myrcene appears to have an anti-inflammatory effect and may prevent the breakdown of some cartilage cells. This could make it useful against osteoarthritis.
Beta-caryophyllene
Beta-caryophyllene exists in many herbs and vegetables, such as cloves and black pepper.
Similarly to other terpenes, beta-caryophyllene may have an anti-inflammatory effect on the body that could reduce pain levels in some people.
In one animal studyTrusted Source, beta-caryophyllene reduced pain from inflammation and nerve pain. The researches noted that this anti-inflammatory and analgesic effect might be useful for treating long-term chronic pain because the body showed no sign of developing a tolerance to these effects.
Humulene
Humulene is a key component of the hop plant. Other plants, such as clove and ginger, also contain it.
One study in Frontiers in Pharmacology Trusted Sourcenotes that terpenes, including humulene, may have potential in preventing allergic reactions and asthma. In animal models, humulene reduced allergic inflammation in the airways. This could make it a helpful compound for natural asthma treatments in the future.
Another study in Food and Chemical Toxicology found that humulene may also have a protective effect in some cells. This protective effect could guard against cancer. However, this is just preliminary evidence, and researchers must continue to study the effects of humulene to back up these claims.
Other terpenes
The terpenes mentioned above are among the most abundant active terpenes that people are likely to come across. Some additional common terpenes include:
- geraniol
- terpinolene
- ocimene
- nerolidol
- phytol