Norbert Nagel, Wikimedia Commons
Medical marijuana gets all the headlines, but many legal weeds have traditions as medicines too. Although homeowners often consider these plants as lawn outlaws, weeds can serve as a floral pharmacy. However, would-be patients of the plants should consult a doctor before self-medicating.
Cichorium intybus, the light blue flower frequently seen along roads, provides the main commercial source of the compound inulin. Patients take inulin to fight high blood fats, including cholesterol and triglycerides, according to WebMD. Research published in Diabetes & Metabolism Journal suggests that inulin intake benefits women with type-2 diabetes by reducing the rate of blood sugar increase after eating. Inulin promotes the growth of certain bacteria in the intestines. While some believe this can help digestion, others suffer serious flatulence when the inulin-fed bacteria build up.
Some people add the dried and roasted root to coffee. Chickory coffee is especially popular in New Orleans.
Böhringer Friedrich, Wikimedia Commons
Trifolium pratense contains chemicals known as isoflavones. These chemicals can act like the female hormone estrogen in the body. Doctors have examined the clover chemicals as a treatment for hot flashes and other symptoms of menopause. However, doctors warn that women with a history or risk of breast cancer should avoid isoflavones, since estrogen-like chemicals have been associated with increased incidence of some cancers.
H. Zell, Wikimedia Commons
Silybum marianum has a 2,000 year history as a liver medicine. Modern research has looked at thistle extracts as a treatment for alcohol-induced liver damage. Substances in milk thistle, particularly the chemical silymarin, may protect the liver from damage after a person takes an overdose of other medications, including acetaminophen (Tylenol). Milk thistle may also be an antidote to poison from the deathcap mushroom (Amanita phalloides). Animal studies found that milk thistle completely counteracted the poison if given within 10 minutes of poisoning, according to the University of Maryland Medical Center.
Muffet, Wikimedia Commons
Native Americans used the milkweed (Asclepias sp.) as a contraceptive, according to the U.S. Department of Agriculture. The milky, white sap that gives the plant its name served to remove warts. However, milkweeds also contain chemicals known as cardiac glycosides. These chemicals can cause severe illness in humans and livestock. Monarch butterfly caterpillars eat milkweed and build up high concentrations of glycosides, which makes the insects nasty tasting to predators.
Tony Hisgett, Wikimedia Commons
Ancient Greeks and Romans used horsetail (Equisetum arvense) to stop bleeding, heal ulcers and wounds, and treat tuberculosis and kidney problems. My wife drinks horsetail tea to flush out her body’s system and help lose weight. The tea has a mildly bitter flavor, similar to chamomile. Research published in Ethnopharmacolgy found that horsetail tea increases urination which corroborates my wife’s contention that the plant is a diuretic, or a substance that increases urination. However, doctors recommend taking a multivitamin when drinking significant amounts of horesetail tea, because it can flush nutrients, such as vitamin B1, thiamin and potassium, out of one's system as well.
J. Carmichael, Wikimedia Commons
In the past, Europeans used remedies made from dandelion (Taraxacum sp.) roots, leaves and flowers to treat fever, boils, eye problems, diabetes, and diarrhea, according to the University of Maryland Medical Center. Practitioners of traditional Chinese medicine take dandelions for stomach ailments and breast problems, such as inflammation or lack of milk flow. Dandelion leaves taste similar to spinach and contains vitamins A, B, C, and D, along with iron, potassium, and zinc.
Uwe H. Friese, Wikimedia Commons
Urtica dioica can put the hurt on an hiker in shorts, but historically the plant has served to treat aching muscles and joints, eczema, arthritis and gout. People still use the plant to treat joint pain, and some studies have suggested that the plant can treat arthritis. Another study found that capsules of dried stinging nettle may reduce the symptoms of hay fever. Europeans frequently use stinging nettle root to treat bladder problems. Boiled nettle makes a side dish similar to collared greens.
For those who brush alongside stinging nettle, a remedy to the sting is often found growing nearby. Applying crushed up dandelion, horsetail, Aloe vera, jewelweed or the leaf of a dock or lock plant can counter the acid in the sting.
Forest and Kim Starr, Wikimedia Commons
Like many of the medicinal weeds in this list, purslane (Portulaca oleracea) also makes a healthy snack. The plant contains a high content of omega-3 fatty acids. I ate some that grew in my yard and found it was somewhat sour. A little bit was good, but too much would be overpowering in a salad. In traditional Chinese medicine, purslane treats genito-urinary tract infections. Research published in Phytomedicine found that the plant reduced problems with cognition in older mice.
Robert Steers/NPS, Wikimedia Commons
Since the age of the ancient Greek doctors have used plantains (Plantago sp., the weed in sidewalk cracks, not the fruit) to speed wound healing. In the training manual Survival, Evasion and Recovery, the U.S. Department of Defense recommends plantain as a poultice on wounds or as a nutrient-rich tea to treat diarrhea.
Julia Adamson, photographer in the Saskatoon area, Wikimedia Commons
Traditionally, healers use burdock (Arctium sp.) to clear toxins from the blood and increase urination, according to the University of Maryland Medical Center. The plant also is used to treat skin ailments, such as eczema, acne, and psoriasis. The leaves and roots of burdock are edible and contains inulin, like chicory, so they may aid digestion and/or cause a nasty case of flatulence. Burdock also contains high quantities of antioxidants that can prevent damage to cells.
Marijuana strains sold in the 20 states where it’s legal are not well tested, and some are even beset with E. coli, mold and pesticides. As more states legalize marijuana, customer demand for organic, chemical-free weed is bound to take root.
MyDx, a handheld device that tests the purity of weed, hopes to put the conscious toker’s mind at ease — more so than it already is. The small testing kit connects with a smartphone app to immediately tell users if their stash contains specific cannabinoids, smell compounds know as terpenoids or harmful chemicals.
“There’s no quick, easy, affordable way to test safety and potency of cannabis samples. People don’t know what they’re putting in their bodies,” co-founder Daniel Yazbeck told Fast Company. “If a doctor prescribes cannabis to you, and you go the dispensary and see a bunch of jars, it doesn’t mean anything. It’s just names.”
Users simply place a sample in the device’s sliding tray and wait for the results. Sensors inside the device act as an “electric nose” and detect marker molecules in vapor form. Additionally, the device also conveys whether the sample will make users happy, social, distracted and so on, depending on the strain.
However, the cannabis sensors are only the first step. MyDx plans to create three other sensor packages for the same device. “Organa” will test for pesticides on fruits and vegetables. “Aqua” will check water samples and “Aero” will assess air quality.
So far, MyDx has surpassed its crowd-funded goal of $19,000 on Indiegogo. The cannabis platform is expected to retail for $399, while a multi-sensor kit will go for $499. Check out the company’s pitch with the following video.