The Castor-Oil plant is in the Book of Jonah 4:6-10: "Now the LORD God appointed a plant and made it come up over Jonah, that it might be a shade over his head, to save him from his discomfort…"
Castor Oil Benefits for Skin, Hair, Constipation and More
For centuries, at the first sign of illness, many parents and grandparents would immediately turn to giving their children castor oil, either topically or internally, to naturally boost immune function and speed up healing.
Folk healers worldwide have also used it to treat a wide variety of health conditions for thousands of years. For example, the reputed benefits of castor oil goes as far back as the ancient Egyptians, who used it to treat eye irritations and as a powerful natural skin care remedy.
It also has deep roots in India, where it’s considered to be a skin-healing, digestive-soothing, antibacterial ingredient that is utilized in Ayurvedic medicine.
What is castor oil used for today? As explained more below, it has natural stimulant laxative properties; has been shown to boost lymphatic, circulatory and immune health; and can help treat constipation, arthritis and more.
What Is Castor Oil?
Castor oil is a non-volatile fatty oil that is derived from the seeds of the castor bean (Ricinus communis) plant, aka castor seeds. The castor oil plant belongs to the flowering spurge family called Euphorbiaceae and is mainly cultivated in Africa, South America and India (India accounts for over 90% of castor oil exports globally).
Castor is one of the oldest cultivated crops, but interestingly it contributes to only 0.15 percent of the vegetable oil produced in the world each year. This oil is also sometimes called ricinus oil.
It’s very thick with a color that ranges from clear to amber or somewhat green. It’s both used topically on the skin and taken by mouth (it has a mild scent and taste).
Studies suggest that many of castor oil’s benefits come down to its chemical composition. It’s classified as a type of triglyceride fatty acid, and almost 90 percent of its fatty acid content is a specific and rare compound called ricinoleic acid.
Ricinoleic acid is not found in many other plants or substances, making the castor plant unique since it’s a concentrated source.
Aside from its primary constituent, ricinoleic acid, castor oil also contains other beneficial salts and esters that mainly act as skin-conditioning agents. This is why, according to a report published in the International Journal of Toxicology, this oil is used in over 700 cosmetic products and counting.
Research studies have found that castor oil contains therapeutic components including fatty acids, flavonoids, phenolic compounds, amino acids, terpenoids and phytosterols. These various compounds give the oil the following properties and potential health benefits:
- Anti-diabetic
- Anti-inflammatory
- Antimicrobial
- Antioxidant
- Hepatoprotective (ability to prevent damage to the liver)
- Free radical scavenging
- Wound-healing
Compounds found in castor can help stabilize the texture and consistency of products, which is why castor oil is used in so many cosmetics, hair and skincare treatments.
Reports show that this oil can be safely taken internally. When swallowed, it’s hydrolyzed in the small intestine by pancreatic enzymes, leading to the release of glycerol and ricinoleic acid, along with other beneficial metabolites.
Benefits
1. Improves Immune Function
One of the major reasons castor oil has strong immune-enhancing effects is because it supports the body’s lymphatic system. The most significant role of the lymphatic system, which is spread throughout the whole body in small tubular structures, is that it absorbs and removes excess fluids, proteins and waste materials from our cells.
Castor oil may be able to help improve lymphatic drainage, blood flow, thymus gland health and other immune system functions.
For this reason, the oil and other parts of the castor plant have been used in traditional systems of medicine for the following health conditions:
- Abdominal disorders
- Arthritis
- Backache
- Constipation
- Muscle aches
- Parasitic infections
- Chronic headaches
- Gallbladder pain
- PMS
- Rheumatism
- Sleep problems like insomnia
A small, double-blind study published in the Journal of Naturopathic Medicine found that adults who used abdominal castor oil packs on their abdomens had significant increases in the production of lymphocytes compared with patients using placebo packs. Lymphocytes are the immune system’s natural “disease-fighters” that attack outside invaders such as toxins, bacteria and other perceived threats.
The lymphatic system also impacts the circulatory and digestive systems, which is why the oil is sometimes used to support heart health and resolve issues like constipation.
2. Boosts Circulation
A healthy lymphatic system and proper blood flow go hand in hand. When the lymphatic system fails (or edema develops, which is the retention of fluid and toxins), it’s much more likely someone will have circulatory issues.
This is due to the fact that the lymphatic circulatory system works directly with the cardiovascular circulatory system to keep blood and lymphatic fluid levels in an optimal balance.
According to the National Heart, Lung, and Blood Institute, “A growing body of evidence reveals that the lymphatic system influences the health of multiple organs, including the heart, lung, and brain.” So castor’s oil ability to positively affect our lymphatic systems likely means better overall circulation and a health boost to major organs like our hearts.
3. Moisturizes Skin and Boosts Wound Healing
Castor oil is completely natural and free of synthetic chemicals (as long as you use pure 100 percent pure oil, of course), yet it’s rich in skin-boosting ingredients like fatty acids. Applying this oil to dry or irritated skin can help to discourage dryness and keep it well moisturized, since it prevents water loss.
It can also help with wound and pressure ulcer healing thanks to its moisturizing as well as antimicrobial and antibacterial properties. It mixes well with other ingredients like almond, olive and coconut oil, all of which have unique benefits for skin.
Lab studies have shown that castor oil is effective against many types of bacteria, including Staphylococcus aureus, Escherichia coli and Pseudomonas aeruginosa. Out of all the staphylococcal bacteria, Staphylococcus aureus is considered the most dangerous and can cause mild to serious skin infections and other concerning staph infection symptoms.
4. Can Help Induce Labor
Castor oil is a time-honored natural remedy for inducing labor. For centuries, pregnant women at full term have taken it orally to help speed up uterus contractions.
In fact, it’s one of the most popular substances taken in a non-medical setting to induce labor.
According to studies, the reason castor oil can work to induce labor is due to the fact that the ricinoleic acid in the oil can activate EP3 prostanoid receptors in the uterus. Some animal studies have shown that active compounds in the oil attach to the molecules that makes muscles — in both the intestines and uterus — contract.
A 2018 observational case control study found that “The use of castor oil is related to a higher probability of labor initiation within 24 hours. Castor oil can be considered a safe non-pharmacological method for labor induction.”
In addition, the full-term women study subjects (between 40 and 41 weeks) who took castor oil had a lower incidence of Caesarean section.
One downside of using castor oil to help with delivery (and the reason it’s not commonly used in hospitals) is that some women feel nauseated after taking it.
5. Helps Dry, Irritated, Sun-Burnt or Acne-Prone Skin
As a natural antibacterial agent, castor oil works similarly to coconut oil for boosting skin health. It also makes a great general skin moisturizer and anti-inflammatory blemish treatment.
If you want to get rid of acne forever, you need to get to the source of the problem. Castor oil is a great natural home remedy for acne.
As it penetrates deep into the skin, it fights bacteria overgrowth that can clog pores, while softening and hydrating irritated skin at the same time.
As mentioned earlier, this oil has been shown to fight off Staphylococcus aureus, which is linked to development of acne.
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