Nettle is a perennial herb that grows throughout North America. Originally from Europe, there are over 50 species worldwide. The plant grows 2 to 4 feet high in shade to full sun. Commonly considered a weed by most, Kansas State University calls the nettle a widely overlooked medicinal herb with numerous applications. Herbs should not be used to replace medical treatments; take them only on the advice of your physician.
Benign Prostatic Hyperplasia
In Europe nettle root is commonly used for benign prostatic hyperplasia, BPH or enlarged prostate. It is often used with saw palmetto to treat some of the symptoms associated with BPH, such as reduced urinary flow, the constant need to urinate, the inability to completely empty the bladder and dripping after urination. Nettle does not decrease the size of the prostate but only reduces the symptoms. How it does this is still unclear. See your doctor to rule out prostate cancer prior to commencing use.
Arthrits and Osteoporosis
Rheumatoid arthritis, osteoarthritis, osteoporosis and muscle aches and pains have been relieved historically from the leaves and stems of the nettle. Few studies support this conclusively, but some individuals find respite from pain when nettle leaf is applied to the sore area. University of Maryland Medical Center (UMMC) notes that some studies show a tincture, or alcohol extract, of nettle in combination with anti-inflammatory drugs, NSAIDS, may reduce the required dosage of NSAIDS.
Other Uses
A further application of nettle is for hay fever. Although only preliminary studies have been done, UMMC reports that nettle's ability to act as an antihistamine may be advantageous to allergies. The nettle also shows promising indications for reducing blood sugar and for decreasing high blood pressure. Other applications noted by Salisbury University's Nurse's Guide To Herbal Remedies (NGHR) are as a diuretic and for eczema and cough.
Precautions
The stem and leaves carry small sharp spines that cause a burning sensation when touched. Washing with soap and water will help relieve the irritation. Once dried or cooked, the nettles lose their sting. Nettle is not recommended for diabetes, as it offers poor glycemic control, nor should it be used for edema, gastrointestinal upsets, cardiac or renal disease, or by women who are pregnant or nursing, according to NGHR. Always consult your physician prior to using any herbal supplement.


