Due to its antioxidant capability, rosmarinic acid is often used as a natural preservative to increase the shelf life of perishable foods ( 6 , 7 ).SUMMARY Rosemary tea contains compounds that may help lower high blood sugar levels by exerting insulin-like effects and boosting the absorption of glucose into muscle cells.One study found that taking 500 mg of oral rosemary twice daily for 1 month significantly lowered anxiety levels and improved memory and sleep quality among college students, compared with a placebo ( 18 ).One study in 20 healthy young adults observed that inhaling rosemary aroma for 4–10 minutes before a mental test improved concentration, performance, and mood ( 20 ).What’s more, a study in 20 healthy adults found that inhaling rosemary oil stimulated brain activity and improved mood.Rosemary extract may improve mood by promoting a healthy balance of gut bacteria and reducing inflammation in the hippocampus, the part of your brain associated with emotions, learning, and memories ( 22 ).SUMMARY Consuming and inhaling compounds in rosemary have been shown to reduce anxiety, boost mood, and improve concentration and memory.SUMMARY Compounds in rosemary tea may protect the health of your brain — both from injury and impairment from aging and neurodegenerative diseases.Animal studies have found that adding rosemary extract to other oral treatments can slow the progression of age-related eye diseases (AREDs) ( 26 , 27 ).SUMMARY Rosemary tea may contain compounds that can help protect your vision as you age by slowing the progression and severity of diseases like cataracts and age-related macular degeneration.Still, rosemary is thought to support digestion by promoting a healthy balance of gut bacteria and reducing inflammation ( 31 , 32 ).Still, rosemary is thought to support digestion by promoting a healthy balance of gut bacteria and reducing inflammation ( , ).One animal study noted that rosemary prevented weight gain among rats, even those fed a high fat diet ( 33 ).One animal study noted that rosemary prevented weight gain among rats, even those fed a high fat diet ( ).If you’re taking any of these drugs — or other medications for similar purposes — it’s best to speak with your healthcare provider before adding rosemary tea to your diet.SUMMARY Rosemary may exert effects similar to those of certain drugs used to treat high blood pressure, increase urination, and improve circulation.Strain the rosemary leaves from the hot water using a mesh strainer with small holes, or remove them from the tea infuser. .

Rosemary: Health benefits, precautions, and drug interactions

This Medical News Today Knowledge Center feature is part of a collection of articles on the health benefits of popular foods .Rosemary was traditionally used to help alleviate muscle pain, improve memory, boost the immune and circulatory system, and promote hair growth.Laboratory studies have shown rosemary to be rich in antioxidants, which play an important role in neutralizing harmful particles called free radicals.According to research outlined in Therapeutic Advances in Psychopharmacology , the aroma from rosemary can improve a person’s concentration, performance, speed, and accuracy and, to a lesser extent, their mood.Research published in Oncology Reports found that “crude ethanolic rosemary extract (RO)” slowed the spread of human leukemia and breast carcinoma cells.”.Also, a report published in the Journal of Food Science revealed that adding rosemary extract to ground beef reduces the formation of cancer-causing agents that can develop during cooking.A study published in the journal Investigative Ophthalmology & Visual Science, led by Dr. Stuart A.

Lipton, Ph.D. and colleagues at Sanford-Burnham Medical Research Institute, revealed that a carnosic acid, which is a major component of rosemary, can significantly promote eye health.

.

The Health Benefits of Rosemary

Rosemary is not only known for its taste and smell; it is also renowned for the many health benefits it possesses.Some of the many potential health benefits of rosemary include:.It is linked to preventing staph infections.Please consult a medical professional before adopting any of the suggestions on this page. .

Rosemary Health Benefits, Nutrients per Serving, Preparation

Rosemary is high in Manganese, an essential nutrient for metabolic health.Potentially Reduced Risk of Cancer.Studies have found that carnosic acid can slow the growth of cancer cells in the body and even lower the risk of developing tumors.Improved Memory and Concentration. .

Rosemary: An Overview of Potential Health Benefits : Nutrition Today

The rosemary plant, Rosmarinus officinalis L (family Lamiaceae), is an aromatic evergreen shrub originating in the Mediterranean region and now growing widely in Europe, Asia, and Africa (Figure 1).The genus name Rosmarinus is derived from the Latin “Dew of the Sea” and has traditionally been associated with remembrance, love, and fidelity.1,2 This plant has been used extensively as a culinary spice in a variety of contexts.Finely minced leaves can enhance stews, casseroles, fish, potatoes, salads, pasta, and breads such as focaccia.Rosemary and its extracts also are used as food preservatives and enhancers of sensory and functional properties.1–3 In the European Union, rosemary extracts are approved as an additive in a variety of products.4 Furthermore, rosemary and its constituents have been incorporated into cosmetics and cosmeceuticals in the hope of enhancing the health of skin and hair.5–8 For centuries, this plant has been an ingredient in folk medicines with associated claims for relief of such diverse symptoms and conditions as dysmenorrhea, mental decline, epilepsy, pain relief, and infertility, to name a few.1,2 It also has been promoted as a treatment for hair loss, dyspepsia, dermatitis, anxiety, cognitive improvement, constipation, joint and muscle pain, and improvement of circulation.1,2,9 Today, research attention is focusing more closely on whether this herb may have potential to alleviate complications of obesity and diabetes, inflammation-associated conditions, and neurological deficits.Data from animal studies in which different delivery systems are used (topical, oral, injectable) may be included together in a section but are not necessarily directly comparable.For the sake of brevity, some cell culture and experimental animal studies are contained in the Appendix (Supplemental Digital Content 1, https://links.lww.com/NT/A15).The referenced studies evaluate the effects of diverse rosemary samples, including its dried powder, essential oil, and water and organic solvent extracts.The European Food Safety Authority (EFSA) has published detailed comparative profiles of these extracts.20 The principal antioxidant components of these extracts and the most widely studied of rosemary constituents are the phenolic diterpenes CA21 and its main breakdown product carnosol and the caffeoyl derivative RA (Figure 2).1,22–28 Seasonal variations, storage conditions, drying processes, and extraction procedures can substantially impact the balance of rosemary bioactive chemicals in a final product.Choice of solvent, culture medium, temperature of biological experiments, and exposure to light will modify effective concentrations of active rosemary constituents in studies of its health benefits.3,29–32.The oral bioavailability of rosemary bioactive constituents can affect systemic exposure and biological outcomes and is an important factor in determining their potential health effects.In a rat model of neuronal cell death and brain damage, animals were fed diets supplemented with ground rosemary (1% and 2% wt/wt) for 6 weeks prior to dosing with CCl 4 .40 Feeding rosemary resulted in a significant 22% and 33% reduction in CCl 4 -induced tissue-type plasminogen activator levels in brain homogenates for rats fed the 1% and 2% diets, respectively, compared with controls.The authors suggested that rosemary lessened tissue-type plasminogen activator–associated extracellular proteolytic activity linked to the chemically induced brain damage.The authors concluded that this aromatherapy produced a benefit not through direct analgesic effects but rather “by providing a competing pleasant sensory and affective experience that can alter retrospective pain evaluation.”41 The practical significance of this response is unclear.It is not surprising that rosemary would have cognitive benefits in light of its ancient use for memory enhancement by Greek and Roman students prior to examinations by rubbing its oil into their temples and foreheads.43.Rosemary essential oil has been shown to elicit physiological responses and changes in mood in several human aromatherapy studies.Test-taking stress was reduced by exposure to rosemary oil sachets, and it was determined that pulse rate also decreased significantly among students compared with controls.45 In contrast, in another student study, exposure to rosemary scent prior to an anxiety-provoking task actually was associated with higher tension-anxiety scores and higher confusion-bewilderment ratings among participants, compared with controls.Participants inhaling rosemary aroma also reported being less anxious and more relaxed and were noted to perform math computations faster but without better accuracy.47 In another study using EEG monitoring, the effect of exposure to rosemary scent was measured by determining the relative left frontal EEG activation, an indication of composed mood, in contrast to that for right frontal activation.Moreover, based on EEG and autonomic nervous system recordings, there was a reduction in the power of α1 and α2 waves and increased β activity in the anterior region of the brain.Odors of oil-impregnated gauze diffused with an electric fan were evaluated for effects on multiple functional assessment tests for Alzheimer disease and dementia.Tomato juices containing 4 rosemary doses (750–6000 mg) were given acutely to 27 older adults 1 to 6 hours prior to testing with the Cognitive Drug Research computerized assessment system.Serum from those fed rosemary showed significantly lower expression of inflammatory markers interleukin 6 (IL-6) and tumor necrosis factor α, compared with controls.These findings suggest that the rosemary constituents were sufficiently bioavailable so that subjects’ serum samples had a significant impact on THP-1 inflammatory markers.The authors suggested that rosemary essential oil’s anti-inflammatory action is due to its inhibition of leukocyte chemotaxis and leukocyte-endothelial cell interactions in the microcirculatory network.In another mouse study, a mixture of rosemary volatile constituents (43% 1,8-cineole, 41% camphor, 14% limonene, 2.5% borneol, 0.5% α-pinene) was administered intratracheally (4.6 μg) to mice 3 hours before intratracheal instillation of 500 μg of suspended diesel exhaust particles.57 Compared with particle-treated controls, after 24 hours, the oil extract significantly inhibited particle-induced lung inflammation and suppressed the expression of macrophage inflammatory protein 1α, macrophage chemoattractant protein 1, and keratinocyte chemoattractant.In a second study,58 using this oil mixture, mice were treated with 1 μg of house dust mites by intratracheal cannula 4 times weekly.A trend toward decreasing levels of C-reactive protein in blood was observed for those subjects initially presenting with elevated C-reactive protein.42 The individual contribution of rosemary cannot be determined.In another study of 56 osteoarthritis patients, a similar phytochemical combination, when given orally for 4 weeks (600 mg/d), decreased reports of disease symptoms in patients with osteoarthritis.59 A randomized double-blind study of 62 individuals with medically diagnosed knee osteoarthritis was conducted to evaluate the effects of a high RA spearmint tea.60 For 16 weeks, participants in the treatment group consumed 2 cups of tea/d, which contained 130 to 150 mg RA/cup, and controls consumed 13 mg RA/cup of tea.Pain scores significantly decreased for the high-RA group, compared with controls, and there was improvement in physical function as measured in the 6-minute walk test.In a human study of subjects with mild atopic dermatitis, topical application of RA (0.3% cream emulsion) twice a day for 8 weeks to elbow flexures significantly reduced erythema and transepidermal water loss on the antecubital fossa, compared with cream controls.61 Treated subjects also self-reported noticeable improvements in dryness and pruritus.A randomized, double-blind, age-matched, placebo-controlled clinical trial was conducted with patients with seasonal allergic rhinoconjunctivitis who were treated orally with RA (50 mg/d or 200 mg/d) for 21 days.62 Based on patients’ daily records, compared with controls, those treated with 50 mg RA exhibited significantly improved symptoms for itchy nose, watery eyes, and itchy eyes.In a recent double-blind, placebo-controlled study, 242 patients with chronic obstructive pulmonary disease were randomly assigned to receive 200 mg 1,8-cineole or placebo, orally 3 times per day for 6 months.64 Compared with controls, those treated with 1,8-cineole showed a significant drop in frequency, severity, and duration of respiratory problems, and, secondarily, lung function and quality of life were significantly improved.In another double-blind, placebo-controlled trial, 32 patients with steroid-dependent bronchial asthma were randomly allocated to take small capsules containing 200 mg 1,8-cineole 3 times a day or placebo for 12 weeks.65 For those receiving 1,8-cineole, there was a significant reduction in oral steroid doses needed to maintain clinical stability.In alloxan-treated rabbits, dosing with this extract (100–200 mg/kg, orally) for 8 days produced a significant decrease in blood glucose and an increase in serum insulin levels, compared with controls, an effect determined in part to be due to the extract’s potent antioxidant activity.70 The authors speculated that the elevation of circulating insulin levels in the rosemary-treated alloxan-diabetic rabbits could be due to components that either protect functional β cells from additional damage or stimulate regeneration of β cells.A recent study found that combining treatment of streptozotocin-induced diabetic rats with an aqueous extract of rosemary (200 mg/kg per day, intragastrically) with a regimen of endurance exercise for 8 weeks resulted in lowered blood indices of oxidative stress by enhancing antioxidant enzyme activates and decreasing lipid peroxidation levels approaching normal levels seen in healthy controls.71 In 2 rodent experiments, a rosemary extract rich in CA was evaluated.A recent study using cultures of human primary omental preadipocytes and adipocytes found exposure to rosemary extract modulated adipocyte differentiation and interfered with adipogenesis and lipid metabolism.78 In a similar feeding study by the same authors,79 dietary supplementation with rosemary extract decreased cecal Lactobacillus/Leuconostoc/Pediococcus groups and increased Blautia coccoides and Bacteroides/Prevotella groups, compared with controls, for both lean and obese Zucker rats.The animals fed the higher dose of rosemary extract gained less weight and had a 57% reduction in fat mass accrual, compared with controls, effects coinciding with increased fecal lipid excretion and lower pancreatic lipase activity.In contrast to other reports, rosemary supplementation had no significant effect on the intraperitoneal glucose tolerance test and fasting insulin levels in this study.Moreover, examining rosemary’s effects on neurological end points at lower doses approximating dietary exposures in humans would certainly be worthwhile.Comparisons of findings between animal studies are often difficult not only because of dosing and sample identity disparities, but also because recognized markers of rosemary bioavailability are not reported.In contrast, water and alcohol extracts of rosemary provided orally to normal and diabetic animals resulted in hypoglycemic responses, improved blood lipid profiles, and lower weight gains.These latter studies suggest that measurable biological effects of rosemary or its individual constituents could likely occur at more modest levels of oral intake with less expectation of adverse consequences.An emerging body of literature supports rosemary as having the potential to improve neurological deficits, inflammatory conditions, and some complications associated with obesity and diabetes.Animal and well-controlled human studies are needed to characterize dose-response relationships for those biological actions that follow dietary administration of rosemary samples at culinary-relevant levels. .

Rosemary: Benefits, Uses, and Side Effects

by John Staughton (BASc, BFA) last updated - Medically reviewed by Emily Borth(MS, RDN) ✓ Evidence Based.Moreover, rosemary can help protect against macular degeneration, stimulate circulation, detoxify the body, and heal many skin conditions.This herb is considered to be sacred by ancient Romans, Greeks, Egyptians, as well as Hebrews and is particularly prevalent in Italian cultural cuisine.Its scientific name is Rosmarinus officinalis and it belongs to the Lamiaceae family, with other herbs, such as thyme, oregano, lavender, and basil.It has fine needle-like leaves with a silver touch and pink, purple, white, or blue flowers.It gives a wonderful flavor and aroma to soups, sauces, stews, and chicken roasts.Rosemary is rich in nutrients that help boost your immunity, reduce muscle pain, and improve your memory.Moreover, it has abundant antioxidants in the form of phenolic compounds like diterpene, carnosol, and rosmarinic acid.The essential oils in it contain powerful ingredients such as cineol, camphene, borneol, bornyl acetate, α-terpineol, and α-pinene.Rosemary has traditionally been used as a natural remedy for upset stomach, constipation, gas, bloating as it helps in relaxing the muscles of the intestine.Rosemary oil may help to promote hair growth, prevent baldness, slow graying, and treat dandruff.A comparative study published in 2015 shows that rosemary oil is effective in treating alopecia by boosting hair growth.At six months, a significant increase in hair count was noted for the group treated with rosemary oil.This may make it an effective treatment and preventive measure for many diseases, including gout, arthritis, and injuries from physical exertion or surgery.A 2015 animal study published in the Saudi Journal of Biological Sciences revealed that extracts of the leaves of rosemary and olive helped in reducing liver cirrhosis, due to their potential antioxidant activities.A randomized controlled trial performed on students suggested that rosemary may help in improving sleep quality.While it may be therapeutic as alternative medicine, if you are suffering from symptoms of depression, stress, or irregular sleep, consult with your doctor before trying out this herb.It also lowers the release of DHT (dihydrotestosterone) hormone, which helps improve prostate health and enhance hair growth.Research shows that treatment with rosemary extract resulted in significant weight loss and increased excretion of lipids through bowel movements.It is linked to preventing staph infections, which are highly contagious and can cause lethal boils and blisters.Due to its antibacterial qualities, rosemary intake has been shown to prevent the growth of H. pylori bacteria, a dangerous pathogen that is associated with gastritis, and stomach ulcers.Oral Health : One study showed that an herbal mouthwash containing rosemary and other herbs was as effective as chlorhexidine in the treatment of gingivitis.: One study showed that an herbal mouthwash containing rosemary and other herbs was as effective as chlorhexidine in the treatment of gingivitis.: As an analgesic substance, rosemary essential oil can be topically applied to the affected area to soothe the pain.Detoxifies the Body : Rosemary is slightly diuretic in nature, meaning that it can help flush out toxins efficiently during urination.: Rosemary is slightly diuretic in nature, meaning that it can help flush out toxins efficiently during urination.Increase Movement : Cineole in rosemary oil, taken either orally or via inhalation, boosts body activities by enhancing locomotion, according to a study.: Cineole in rosemary oil, taken either orally or via inhalation, boosts body activities by enhancing locomotion, according to a study.: You can also add this herb in soups, roast potatoes, chicken to give them an extravagant flavoring.: There is some evidence that rosemary leaves in excess quantity can cause pulmonary edema or fluid accumulation in the lungs.Fertility : Long-term high consumption may lead to a decrease in sperm count, density, and mobility in men.: Long-term high consumption may lead to a decrease in sperm count, density, and mobility in men.Note: If you are allergic to other members of the mint family, you may experience discomfort if you consume or apply rosemary or its oil, but the reactions are typically mild. .

Rosemary Benefits, Side Effects, and Preparations

Rosemary (Rosmarinus officinalis) is an herb commonly used in savory cooking.Health Benefits.The following are conditions on which researchers have applied the effects of rosemary; though some have a stronger connection to rosemary for potential health benefits than others, more research is needed on rosemary's effect overall.Early research suggests that applying rosemary oil to the scalp is as effective as minoxidil for increasing hair count in people with male-pattern baldness.In a research study, people who massaged rosemary and other essential oils (lavender, thyme, and cedarwood) showed improvement after seven months.Some early research shows that taking a product containing rosemary, hops, and oleanolic acid can reduce pain associated with arthritis.Some research suggests that taking a product containing rosemary, centaury, and lovage may be able to decrease the amount of protein in the urine when taken with standard diabetes medications.Early research shows that taking rosemary does not improve attention or mental energy in adults with low energy levels.While it was thought that rosemary could improve the effects of fibromyalgia, early research suggests that taking a product containing rosemary, hops, and oleanolic acid does not, in fact, improve symptoms of fibromyalgia.When you cook with rosemary, you might use the dried ground spice or fresh rosemary from the produce section of the market.For that reason, many cooks prefer using fresh (rather than dried) rosemary.Some people also flavor oils, such as olive oil, by adding a sprig of rosemary and letting it infuse.When used in typical amounts to flavor food, rosemary is likely safe for most people.According to medical sources, a typical dosage of rosemary leaf is 4 to 6 grams daily.Many cooks use thyme or tarragon as a substitute for rosemary in recipes.For that reason, cooks generally remove the small rosemary leaves from the stem before cooking, unless they plan to remove the stem after cooking. .

10 Rosemary herb nutrition facts and health benefits

Today, it is grown in nearly all parts of the Mediterranean area and Asia Minor as a major culinary herb. .

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