Roselle Leaves: The Nutritional Properties of this Sour and Tangy Herb

Written By: Vivian Benjamin

Roselle Leaves
Roselle leaves come from the family Malvaceae and originate from West Africa. Nevertheless, it is currently extensively cultivated around the world in countries such as Sudan, Egypt, Malaysia, India, Indonesia, the Philippines, Brazil, Australia, and the US.


This medicinal herb thrives in tropical, warm and humid climates. Roselle plant is an annual herb growing up to 3.5m tall with an erect reddish stem. The leaves sprout alternately on the stem and are usually 15 cm long. The flowers are between 8 and 10 cm in diameter and vary from white to pale yellow with a dark red spot at the base of each petal and consist of a stout fleshy calyx at the base. When the flower matures, it turns fleshy and bright red.


The Roselle plant requires adequate water and sunlight throughout the day; therefore, it can grow in tropical climates. Although the calyx holds valuable medicinal components and contains plenty of health benefits, the leaves of the Roselle plant are also renowned as a medicinal herb with its nutritional properties to enhance health and well-being. Roselle leaves have a sour and tangy taste, which is great to enhance the flavour of a savoury dish. 




The Sour and Tangy Herb in Traditional Medicine
Based on traditional medicine, Roselle leaves are notable for their cooling nature to the body. The leaves are utilized as a detox agent to eliminate excess heat from the body, treat fevers and sore throats. In addition to that, Roselle leaves are rich in fibre; hence used to treat constipation, bloating and irritable bowel syndrome.


Moreover, this medicinal herb supports healthy heart function by regulating blood pressure and cholesterol levels in the body. Besides that, crushed Roselle leaves are applied topically to cure boils, skin inflammations, ulcers and cracks. Similarly, due to the high content of Vitamin C in the leaves, this medicinal herb can promote healthy skin. Apart from that, Roselle leaves are also utilized to cure pain related to rheumatism. 




6 Roselle Leaves Evidence – Backed Health Benefits
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1. Antioxidant properties
Free radicals are widely known to destroy the cells inside your body. Antioxidants destroy these free radicals to help maintain healthy cells. Studies have concurred that not only do antioxidants help against the damage done by free radicals, but they may also prevent chronic diseases. Research done on Roselle leaves demonstrates that this medicinal herb contains rich antioxidant properties and significantly reduces oxidative liver damage.



2. Regulates blood glucose levels
Diabetes is a chronic, long-lasting health condition that affects the population worldwide due to impairment of the pancreas. Studies done on Roselle leaves show that this medicinal herb regulates the digestion of carbohydrates and enhances insulin secretion, subsequently reducing blood glucose levels.
 


3. Prevents cancer
Cancer is one of the leading causes of death around the world. Many people develop this chronic disease due to poor nutrition choices and unhealthy lifestyles. Studies done on Roselle leaves display that this medicinal herb may have the potential to inhibit stomach cancer, leukaemia, breast cancer, ovarian cancer, cervical cancer and prostate cancer.



4. Anti-microbial properties
Bacterial infection can happen to anyone around the world. Exposing yourselves to unclean environments and practising unhygienic habits leads to microbes invading your body. This affects the physical and mental health of a person. Studies done on Roselle leaves indicate that this medicinal herb may inhibit the growth of both Gram-positive and Gram-negative bacteria.



5. Anti-hypertensive effects
Hypertension or high blood pressure is a common disease that affects the population around the world. Over time, this illness can cause heart disease and affect the kidneys. Recent research has shown that Roselle leaves significantly decrease both systolic and diastolic blood pressure.



6. Reduce cholesterol
A poor diet can lead to the build-up of fats in the blood vessels, and eventually, people will end up developing heart disease. Research done on Roselle leaves depicts that this medicinal herb can reduce cholesterol levels in the body; consequently lowers the occurrence of cardiovascular disease. 









All in All
Roselle leaves are a medicinal herb famous for their sour and tangy taste, used in cooking dishes to enhance flavour, in addition to their numerous health benefits. This medicinal herb was used in traditional medicine to treat illnesses and cooking for over 6,000 years, making it one of the ancient medicinal herbs in the world. Presently, Roselle leaves are still used in cooking curries, soups and stir fries in some parts of the world.



Nutrition Takes dives into what science has to say for the health benefits of this medicinal herb and found 6 nutritional advantages of Roselle leaves. Share or ask questions if you would like to know more about the topic or if you have different insights that you would like to share. I am always happy to know about your journey in holistic approaches. 









References
1. Lai YJ et al (2024); Extraction Effects on Roselle Functionalities: Antioxidant, Antiglycation and Antibacterial Capacities; Foods;
    13(14): 2172.

2. Edo GI et al (2023); Proximate Composition and Health Benefits of Roselle Leaves. Insight on Food and Health Benefits;
    Food Chemistry Advances; 3: 100437.

3. Hapsari BW et al (2021); Methodologies in the Analysis of Phenolic Compounds in Roselle: Composition, Biological Activity
    and Beneficial Effects on Human Health; Horticulturae; 7(2): 35.

4. Almajid A et al (2023); Exploring the Health Benefits and Therapeutic Potential of Roselle Leaves in Human Studies:
    A Comprehensive Review; Cureus; 15(11): 49309.


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