Kanna is a type of succulent plant native to South Africa. The herb has several purported benefits, and has been used as a form of traditional medicine for generations. Kanna may be able to alleviate daily maladies like pain, hunger, and thirst. It also has some psychological effects. The plant can reduce feelings of anxiety and stress, and it may be able to promote positive emotions. It’s not just snake oil – modern research seems to affirm its beneficial properties.
At a Glance
Kanna is a fairly polarizing plant. Its advocates assert that the herb can relieve pain, reduce hunger and thirst, and instill focus in its users. Kanna’s long history of use and relative safety have also sparked interest among its supporters.
While there are plenty of researchers promoting kanna’s beneficial effects, it also has some detractors. Critics of kanna cite the limited data and researcher bias surrounding it as two major issues. They also note that kanna may not work for everyone, and new users frequently experience nausea after consuming the herb. The plant may also cause harmful interactions with a user’s prescriptions, if they have any.
History
Kanna grows naturally in the area that is now South Africa. People indigenous to the region fermented the herb and chewed on the resulting slurry for its beneficial effects. They knew the herb by several names including “kanna,” “channa,” or “kougoed.”
The history of kanna dates back to the ages before European colonization. At the time, two main tribes called the region home: the Khoikhoi and the San. While they utilized Kanna for its beneficial effects, they also had a spiritual connection with the plant. In fact, Kanna was so significant to these people that they even called the region “Kannaland,” according to European travelers to the area in the 17th century. Colonial expansion in the 1600s wiped out much of the oral history surrounding Kanna and its origins. However, we do know that it was associated with fertility, marriage, and divination, and healing.
Potential Benefits of Kanna
While kanna has several possible mental, emotional, and physical benefits for its users. However, research about the plant is still developing. Initial information about kanna is promising, but there’s still significantly more research to be done on kanna’s effects.
Mental
Kanna may have several potential cognitive benefits, like helping users keep their minds sharp and healthy. Some studies have shown that kanna may be an effective way to treat certain degenerative brain disorders like Alzheimer’s disease. One key property of kanna is its ability to block phosphodiesterase 4 (PDE4), an enzyme that plays a role in Alzheimer’s disease.
It’s important to note, however, that the doctor behind this study may be biased. First, they’ve spent their entire lives studying traditional African medicine and may have a vested interest in the study. Additionally, they have a financial stake in the research as well: they work for a company that makes and sells kanna extracts.
Emotional
Clinical studies demonstrate that kanna may be an effective way to improve sleep and reduce stress. In a randomized, controlled study, participants reported that kanna improved their sleep quality and reduced their levels of stress. Other research shows that the compounds in kanna can decrease levels of cortisol, a key hormone linked to stress, in its users. One study on rats seemed to confirm kanna’s antidepressant effects, but data showed that kanna was only about half as effective as a traditional antidepressant.
Depression is also linked to inflammation. Compounds called cytokines, which the body naturally produces to control inflammation, appear to be the key to this link. Some research shows that kanna can block the effects of cytokines in the body. This, in turn, can help reduce depression.
Physical
While indigenous peoples used kanna to relieve pain, hunger, and thirst, there’s been surprisingly little modern research into these effects. Most information we have comes from anecdotal accounts and animal trials. However, this data is promising. Studies show that kanna can activate opioid receptors in the brain, lending credence to its effectiveness as a painkiller.
In addition, kanna’s ability to fight hunger does have some data backing it up. Some of the herb’s ingredients bind to cholecystokinin-1 receptors in the brain. These receptors control the sensation of hunger, and by activating them, kanna can help users feel full. It’s important to note that no modern studies have examined this hypothesis, though – the only data that supports it comes from experiments conducted in the early 1900s.
Is kanna Safe?
Kanna is widely considered to be safe for human consumption. Studies show that kanna has no side effects on humans in doses up to 6 mg per pound of body weight. Some first-time users may experience nausea with their initial dose, but this usually disappears over time. Researchers studying the effects of kanna on rats have demonstrated that the herb is non-habit forming.
Kanna’s Interactions with Other Drugs
Although kanna itself is fairly safe, it can have some unintended interactions with other prescriptions. If you’re taking any of these drugs, make sure to consult your doctor before taking kanna.
Monoamine Oxidase Inhibitors (MAOIs)
- Tranylcypromine
- Moclobemide
- Iproniazid
- Isocarboxazid
- Nialamide
- Selegiline
- Phenelzine
- Rasagiline
Selective Serotonin Reuptake Inhibitors (SSRIs)
- Escitalopram
- Paroxetine
- Sertraline
- Citalopram
- Fluvoxamine
- Fluoxetine
Serotonin and Norephedrine Reuptake Inhibitors (SNRIs)
- Venlafaxine
- Levomilnacipran
- Desvenlafaxine
- Duloxetine
The Takeaway
Kanna may be able to help users manage their pain, sharpen their mental acuity, and promote an overall better mood. In addition, it presents few drawbacks: it’s not addictive, and it has a long history of safe use. There’s also modern research to back these claims up.