2024 Forfatter: Cecilia Ryder | [email protected]. Sidst ændret: 2023-12-17 14:20
Brændenælder (også kendt som brændenælder) er et dagligt syn i traditionel urtemedicin og bruges hovedsageligt til behandling af allergier, betændelse og fertilitetsproblemer. Gamle egyptere brugte angiveligt denne allestedsnærværende urt til behandling af gigt og lændesmerter (1). Det har været brugt i årevis for sine helbredende egenskaber.
Drikke brændenælde te kan hjælpe med at håndtere mange lidelser. Denne urtete har mange sundhedsmæssige fordele, såsom at fremme hårvækst, reducere allergier og astma, hjælpe blodsukkerstyring og øge urinvejsundheden.
Lad os lære lidt mere om brændenældefordele i denne artikel.
Indholdsfortegnelse
- Hvad er brændenælde?
- Hvad er de sundhedsmæssige fordele ved brændenælde?
- Ernæringsprofil af brændenælder
- Sådan forbruges det
- Sådan laver du brændenælde te
- Hvad er bivirkningerne af brændenælde?
Hvad er brændenælde?
Brændenælden (Urtica dioica) har været en vigtig urtemedicin siden oldtiden (2). Det har en eksotisk biokemisk profil. Det vokser i milde til tempererede klimaer over hele verden - især steder med masser af fugt. Du kan finde visse arter af brændenælder ofte i skove, ved floder eller vandløb og på vejkanter.
Dens videnskabelige navn Urtica dioica kommer fra det latinske ord uro, som betyder "at brænde", fordi bladene kan forårsage en midlertidig brændende fornemmelse ved kontakt. Disse planter (eller ukrudt) er hjemmehørende i Mexico, Italien, Nepal, Indien, Kina, Rusland, Holland, Nordamerika og dele af Afrika. Visse arter af brændenælde, især brændenælden, har hår på deres blade og luftdele. Nogle af disse stikker også! Derfor navnet (1).
Bladene er tæt dækket af stikkende hår, der frigiver potentielt smertefremkaldende toksiner (1).
Når menneskelig hud kommer i kontakt med et nældeblad eller stamme, udvikler det hurtigt rødlige pletter, der klør og brænder. Plantenes hår eller trichomer er naturligt designet til at beskytte planten mod insekter.
Imidlertid er det sikkert at indtage denne magiske urt efter forarbejdning. Det følgende afsnit handler om fordelene ved brændenældeblade. Begynd at rulle!
Hvad er de sundhedsmæssige fordele ved brændenælde?
1. Kan øge hårvækst og styrke
Traditionel medicin brugte Urtica-arter til at stimulere hårvækst. En undersøgelse undersøgte denne egenskab ved brændenælde (Urtica dioica) med en kombination af urteekstrakter. Dette urtepræparat øgede spredningen af humane dermale papillaceller (3).
Β-sitosterol i brændenælde udløser dannelsen af nye blodkar (angiogenese). Det tilskynder til syntese af vaskulær endotelvækstfaktor (VEGF) og understøtter ny hårvækst (3).
Brændenældenes blade og rødder regulerer kønshormonernes og deres substraters aktivitet. De hjælper med at kontrollere hårtab (alopeci) hos mænd og kvinder med hormonelle ubalancer (4).
2. Kan behandle høfeber, astma og allergier
Høfeber eller allergisk rhinitis er forårsaget af pollen, støvmider, skimmel, svampesporer, kakerlakker og fjer. Andre årsager inkluderer madfølsomhed, metaboliske sygdomme og visse stoffer. Dens symptomer inkluderer nysen, næsestop, kløe, lakrimation (konstant tåreflåd), hovedpine, mundtørhed, døsighed, træthed og hjertearytmi (5).
Det er her, alternativ medicin kan komme til undsætning (5), (6). Brændenælde (Urtica dioica) indeholder nicotinamid, synephrine og osthole med potente antiinflammatoriske og antiallergifremkaldende egenskaber.
Disse fytokemikalier udviser en antagonistaktivitet mod de proinflammatoriske histaminreceptorer, hvilket blokerer produktionen og frigivelsen af histamin (5). De interfererer også med aktiviteten af proinflammatoriske celler, kemiske budbringere og de kontrollerende gener (5).
Sundhedspersonale bør undersøge brugen af alternativ medicin til behandling af akutte og kroniske lidelser som astma, luftvejsallergier osv. Som et alternativ til almindelig medicin (6).
3. Kan hjælpe med at håndtere problemer med prostata
Overvækst af prostata (godartet prostatahyperplasi) øger trykket på urinrøret. Dette deaktiverer urinvejene og forårsager adskillige kroniske forstyrrelser med aldring (7).
I rotteundersøgelser viste brændenælde forbedring i prostata problemer. Nettle rodekstrakter hæmmer aromatase, et enzym, der omdanner testosteron til østrogen. Østrogen er tæt knyttet til prostata lidelser (7).
Andre undersøgelser demonstrerer de antiproliferative egenskaber af nælde rod i humane kræftceller. Et 20% alkoholisk ekstrakt af brændenælderot reducerede væksten af kræftprostatacitelceller i løbet af et syv-dages forløb (8).
4. Kan reducere betændelse
Brændenældeekstrakt indeholder et antiinflammatorisk stof, der kan undertrykke flere cytokiner i inflammatoriske ledsygdomme (9).
According to another study, applying stinging nettle leaf appears to relieve osteoarthritic pain (10). Stinging nettle reduced levels of multiple inflammatory hormones by interfering with their production (11).
However, more research and human studies are required to recommend nettle as an anti-inflammatory treatment.
5. May Lower Blood Pressure
Stinging nettle was traditionally used to treat high blood pressure (12). Stinging nettle extract was found to possess antihypertensive effects.
It may help lower blood pressure by allowing blood vessels to relax and reducing the force of the heart’s contractions. More human studies are needed to confirm these effects.
6. May Aid Blood Sugar Control
Nettle has shown some promising effects on blood glucose levels. Traditional medicine uses nettle leaves to treat diabetes mellitus due to their anti-hyperglycemic properties (13).
However, more research on humans is needed to establish the safety and efficacy of nettle leaves in controlling blood sugar levels.
7. May Monitor Heart And Liver Health
In a 2018 rat study, the administration of 150 mg/kg/day stinging nettle extract for a month improved the blood lipid profile. The nettle extract worked far better than its commercial synthetic drug counterpart (14).
Nettle extract boosts the antioxidant machinery in the body, thereby preventing (and ending) lipid peroxidation. A balanced lipid profile and healthy liver reduce the risk of hypercholesterolemia-induced diseases (15).
Hypercholesterolemia is linked to atherosclerosis and other inflammatory diseases. Nettle leaf helps prevent atherosclerosis and hypertension, as per rat studies. It is, hence, a potent hepato- and cardioprotective dietary additive (16).
8. May Help Treat Menstrual Health, PCOS, And Fertility Concerns
Around 10%-15% of women of reproductive age experience oligomenorrhea and 3%-4% of them have amenorrhea.
Oligomenorrhea and amenorrhea are changes in regular menstrual cycles that cause long menstrual cycles and the absence of menstruation, respectively. While hormone replacement therapy is the most common remedy, herbal medicine is proving to be effective in such cases (17).
Herbal extracts of nettle, peppermint, onion, and nigella showed a positive effect on polycystic ovary syndrome (PCOS). They could control menstrual bleeding, ameliorate menstrual irregularities, balance hyperandrogenism, and promote fertility (17).
These herbs possess phytochemicals, including flavonoids, phenols, phytosterols, and terpenoids, that can mimic the natural hormonal function and restrict bleeding. That is why nettle plant parts can enhance follicle maturation, reduce coagulation factors, relax uterine muscles, and facilitate uterine recovery (17), (18).
9. Can Accelerate Wound Healing
Wound healing could get prolonged in the presence of free radicals and several physiological stresses. The delay might affect one or all steps of wound contraction, recovery of epidermal cells (reepithelialization), and restoration of blood supply (neovascularization) (18).
Using plant medicine for healing wounds is an ancient remedy. Several flowering plants like stinging nettle have been lauded for their vulnerary and antioxidant properties.
The nettle leaf has an antihemorrhagic effect because of its flavonoids, minerals, vitamins, and fatty acid content (18).
Using stinging nettle extract on wounds would reduce the bleeding time and promote blood clotting. It also eliminates pathogens, traps the pro-inflammatory free radicals, and reduces the average healing time in rat models (18).
In short, the leaf, root, and other parts of the stinging nettle have powerful antioxidant, vulnerary, antihemorrhagic, anti-inflammatory, anti-atherosclerotic, anti-hypercholesterolemic, cardioprotective, hepatoprotective, anti-allergic, and anti-diuretic properties.
Shouldn’t there be something in the nettle plant parts that impart(s) these properties?
Absolutely! Learn more about them in the following section.
Nutritional Profile Of Stinging Nettles
The stinging nettle plant contains a load of phytochemicals. The fresh leaves contain β-carotene, violaxanthin, xanthophylls, zeaxanthin, luteoxanthin, and lutein epoxide that impart those mind-blowing benefits to this herb.
Nettle also contains phenolic acids, including carbonic, caffeic, caffeoyl malic, chlorogenic, formic, silicic, citric, fumaric, glyceric, malic, ellagic, oxalic, phosphoric, and succinic acids (19).
Quercetin, myricetin, isorhamnetin, kaempferol, etc. are the flavonoids. Acetylcholine, betaine, choline, lecithin, histamine, scololeptin, rutin, rosinidin, and naringin are a few other phytochemicals present in the nettle leaf, root, and stalk (19).
This medicinal herb scores well in nutrition too. The leaves contain copious amounts of potassium, calcium, folate, vitamins A and K, simple carbohydrates, protein, and essential precursors.
Unit | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Energy | Energy | Protein | Total lipid (fat) | Ash | Carbohydrate, by difference | Fiber, total dietary | Sugars, total | Minerals | ||||||
Iron, Fe | Magnesium, Mg | Phosphorus, P | Potassium, K | Sodium, Na | Zinc, Zn | Copper, Cu | Manganese, Mn | Selenium, Se | Vitamins | |||||
Riboflavin | Niacin | Vitamin B-6 | Folate, total | Folate, food | Folate, DFE | Choline, total | Betaine | Vitamin A, RAE | Carotene, beta | Carotene, alpha | Vitamin A, IU | Lutein + zeaxanthin | Vitamin K (phylloquinone) |
How To Consume ItNettle leaves are very versatile and can be brewed as an herbal tea, taken as a supplement, and applied as an ointment. You can buy dried/freeze-dried leaves, capsules, tinctures, and creams. Stinging nettle ointments are often used to ease osteoarthritis symptoms. Studies suggest that the following doses are most effective for certain conditions (20):
It is available in many stores. The dried leaves and flowers can be steeped to make an herbal tea, while its leaves, roots, and stems can be cooked and added to soups, smoothies, and stews. Blanched nettles can be a good addition to your salad. Try tossing a few nettle leaves into your salad. If that doesn’t sound appealing, you can brew a cup of fresh tea with nettle. How To Make Stinging Nettle TeaWhat You Need
Let’s Make It
You might find it tasting bitter and woody initially. A few cups or days down, you will come to love its freshness. Alternatively, blanch the nettle greens in saltwater and use them in salads or pesto. You could also sauté the greens in oil, butter, or other cooking fat. This can be enjoyed with red or white meat and added to salads. Ingesting nettle greens is a popular and more effective way of obtaining their benefits. But they are wild plants and called ‘stinging’ nettles. Should you be concerned? Absolutely! Check out the adverse effects of using nettle leaves. What Are The Side Effects Of Stinging Nettle?Well, contrary to their wildness, nettles are considered safe. There are very few side effects of having them, but none are lethal or toxic (21). Hair-like barbs of nettle leaves can harm the skin. These barbs can inject a variety of chemicals, such as (19):
These compounds can cause burning and rashes. Researchers found that nettle roots might cause GI tract disturbances, profuse sweating, and allergies in some individuals. Freshly plucked nettle leaves might cause localized stinging, rash, itching, and tongue edema (21). But as they act as an emmenagogue, they may possess uterine-stimulant properties. If pregnant women take nettles without medical supervision, they could go into premature labor. Cooked and dried stinging nettle is safe to consume. However, eating fresh leaves may cause irritation. Do You Know How The Nettle Stings?
ConclusionStinging nettle may reduce inflammation, aid blood sugar and blood pressure management, and boost hair growth and strength. The leaves are packed with huge amounts of flavonoids, polysaccharides, vitamins, and hormonal precursors. In fact, stinging nettle is considered the only plant that contains choline acetyl-transferase – an acetylcholine-synthesizing enzyme. Expert’s Answers For Readers’ QuestionsDoes nettle tea help you sleep? Yes. Nettle tea promotes better sleep without increasing blood sugar levels, which makes sleep deeper. How much nettle tea should you drink a day? The maximum recommended use of nettle tea is four cups per day. Does nettle tea contain silica? Yes, nettle leaves contain silica (22). Is stinging nettle good for the kidneys? Yes. The stinging nettle can therapeutic effects toward urinary tract ailments and kidney stones. The flavonoids, anthocyanins, and saponins present in stinging nettle can help inhibit calcium and oxalate deposition (23). Does stinging nettle interact with medications? Yes. Using herbal medicines like nettle leaves with anti-inflammatory drugs is not recommended as they may interact with synthetic drugs. Do not take these leaves when you are on painkillers or similar medications without consulting your doctor. 23 sourcesStylecraze has strict sourcing guidelines and relies on peer-reviewed studies, academic research institutions, and medical associations. We avoid using tertiary references. You can learn more about how we ensure our content is accurate and current by reading our editorial policy.
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