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- 1 What are turmeric and curcumin?
- 2 Turmeric Powder vs Supplements
- 3 What is inflammation?
- 4 Turmeric’s Anti-inflammatory Properties
- 5 What is Rheumatoid Arthritis?
- 6 What is Osteoarthritis?
- 7 How to Increase Curcumin Absorption
- 8 Does curcumin improve arthritis symptoms?
- 9 Final Thoughts on Curcumin for Rheumatoid and Osteoarthritis
Although turmeric is used in many home kitchens as a culinary spice, there are also purported health benefits. One of these claims is curcumin has been shown to reduce pain and inflammation in patients with arthritis.
Arthritis refers to the inflammation of one or more joints in the body. Rheumatoid arthritis (RA) and osteoarthritis (OA) are two common forms of arthritis.
To determine if curcumin reduces RA and OA pain and inflammation, we reviewed data from a few clinical studies that evaluated using turmeric extracts and curcumin for treating rheumatoid arthritis and osteoarthritis symptoms.
What are turmeric and curcumin?
Turmeric, a member of the ginger family, is native to India and Southeast Asia. It is used in Ayurvedic and traditional Chinese medicine and culinary spice. Curcumin is the primary active ingredient in turmeric. It gives turmeric a yellowish color.
The part of turmeric harvested for use is the underground stem (rhizome). Once the harvested rhizome is processed, it can be used in powder form or dietary supplements.
Turmeric is used in many recipes, most notably Indian and Asian dishes, cosmetics, and fabric dye. Some people make a paste with turmeric powder and other ingredients to help skin conditions.
The main components of turmeric are curcuminoids and essential oils. The most well-known curcuminoids are curcumin and its analogs. Turmeric and curcumin supplements typically contain a mixture of curcuminoids and can be found in various forms such as capsules, soft gels, and tablets.
Turmeric Powder vs Supplements
Turmeric spice comes from the root of the Curcuma longa plant and is sold as a powder. Some manufacturers do not disclose the percentage of curcumin (by weight). Others give a minimum value, for example, 3% curcumin. Tayyem et al. analyzed 28 turmeric and curry powders, and the highest curcumin concentration was 3.14% by weight.
Turmeric and curcumin dietary supplements contain a much higher percentage of curcumin. In turmeric extracts, the curcuminoid concentration is often as high as 95%. Most clinical studies use turmeric extract. Turmeric extracts are less likely to be contaminated with heavy metals such as lead than turmeric powders.
If you decide to experiment with curcumin or any supplement medicinally, be sure to consult with your healthcare provider. Curcumin could change how you metabolize other medicines or affect other health conditions you may have. If you are about to have surgery, be sure to tell your physician a few weeks in advance you are taking curcumin.
What is inflammation?
When your body is injured, your immune system is activated. The immune system sends out inflammatory cells and cytokines. Cytokines are proteins that stimulate additional inflammatory cells. One of the actions of these cells is to begin an inflammatory response to start healing the injured tissues.
There are two types of inflammation: acute and chronic.
Acute inflammation occurs in response to an injury, infection, or stress, such as when you cut yourself. Inflammatory cells are sent by the body to the injured area to start the healing process. The tissue may be red, warm, or swollen, and the inflammation can last from a few days to a few weeks.
Chronic inflammation lasts several months to years and occurs when the body sends inflammatory cells with no outside danger (e.g., injury). For example, if an individual has rheumatoid arthritis, these inflammatory cells attack joint tissues, leading to inflammation that comes and goes. This inflammation can damage the joint(s).
Turmeric’s Anti-inflammatory Properties
For centuries turmeric has been used as an anti-inflammatory remedy in traditional Asian medicine. Preclinical (research using animals before clinical studies) and clinical trials have shown curcumin, a component of turmeric, to have an anti-inflammatory effect. 
So how does curcumin act as an anti-inflammatory? It blocks inflammatory cytokines and certain enzymes, including 5-LOX and cyclooxygenase-2 (COX-2).
What is Rheumatoid Arthritis?
RA is one of many diseases associated with chronic inflammation of the joints. In RA, your immune system attacks healthy body tissue. It does this by mistakenly sending antibodies to the lining of your joints. These antibodies attack the tissue around the joint. The cells that cover your joints become sore and inflamed. When this occurs, chemicals are released that damage bones, cartilage, tendons, and ligaments.
One method of treating arthritis is to use anti-inflammatories and corticosteroids. Since curcumin has been shown to have anti-inflammatory properties, clinical trials have been conducted to determine if curcumin improves symptoms in people with RA. We summarize some of these trials in this article.
What is Osteoarthritis?
Osteoarthritis (OA) occurs when the protective cartilage that cushions the ends of the bones wears out over time.
Medications such as nonsteroidal anti-inflammatory (NSAIDs) are commonly used To relieve OA pain and other symptoms. NSAIDs include aspirin, ibuprofen (Motrin®, Advil®), and Naproxen sodium (Aleve®). Stronger NSAIDs, such as Celebrex and Voltaren, are available by prescription.
Cymbalta is prescribed to treat mood disorders such as anxiety and depression, fibromyalgia, and nerve pain. It was approved in 2010 by the FDA to treat chronic musculoskeletal pain, including osteoarthritis and chronic low back pain.
Curcumin has anti-inflammatory properties, making it a potential treatment for reducing pain and joint inflammation without the gastrointestinal side effects of NSAIDs. Although there is promising research (which we discuss in this article) to support using curcumin to reduce osteoarthritic pain, more research is needed to confirm the results.
How to Increase Curcumin Absorption
The anti-inflammatory effects of curcumin are well documented in reputable scientific journals.
However, one of the problems with taking curcumin is that when taken alone, it has a poor absorption rate and a low bioavailability (the amount of a substance that is absorbed or can be used by the body). There are ways of consuming curcumin to circumvent these issues.
Add Black Pepper
Piperine, an active ingredient in black pepper, has been shown to increase the bioavailability of curcumin. Black pepper can be added to turmeric when cooking.
Manufacturers use piperine, black pepper extract, or BioPerine® in curcumin formulations. BioPerine® is a patented extract of black pepper fruit with 95% piperine.
BioSchwartz manufactures a formula with turmeric extract, standardized to contain 95% curcuminoids and 10 mg BioPerine® for increased absorption. There are no fillers or binders in this product. It is made with non-GMO ingredients and is soy-free and gluten-free.
The label on the bottle states each batch is 3rd party tested for purity and potency. While the product is made in the USA, the ingredients are domestic and imported.
Since curcuminoids attach to fats, curcumin absorption might be improved if you combine it with healthy fats such as coconut or olive oils. Michael Greger M.D. states, “When eaten with fat, curcumin can be directly absorbed into the bloodstream through the lymphatic system thereby in part bypassing the liver.”
Use Supplements that Address Bioavailability
Turmeric/curcumin is more effective when taken in supplement form. If piperine, black pepper extract, or BioPerine® is not included in the formulation, it’s best to choose a curcumin extract that uses a delivery method to improve bioavailability.
The high-quality extracts used in clinical trials such as BCM-95 (Curcugreen®) and Meriva are good options.
BCM-95 Arjuna Natural Extracts Ltd owns the patent to a turmeric formula called BCM-95®(Curcugreen®). It is a 100% pure turmeric extract with enhanced bioavailability.
BCM-95® is a combination of curcumin, turmeric essential oil, and turmerones and is a 95% standardized curcumin-essential oil complex. Arjuna sells BCM-95®, rebranded at Curcugreen® directly to the US market. One curcumin supplement made with BCM-95 is Terry Naturally CuraMed.
Does curcumin improve arthritis symptoms?
Next, we summarize clinical trials in which some participants with either RA or OA took curcumin.
In a study by Chandran and Goal, 45 people with RA were given either curcumin, a nonsteroidal anti-inflammatory drug (diclofenac sodium), or a combination of the two.
After two months, the group given only curcumin showed the most improvement in symptoms and no adverse side effects.
While this is only one small study, this demonstrates the need for large-scale human clinical trials to assess curcumin use in patients with RA and other arthritic conditions.
A 2016 study published in the Journal of Medicinal Food, Daily et al. systematically reviewed randomized clinical trials of turmeric extracts and curcumin for treating arthritis symptoms. After conducting literature searches, they found eight studies that met the selection criteria.
The participants suffered from either knee osteoarthritis or rheumatoid arthritis (mild to moderate severity) and reported their pain as ≥5 on a scale of 1 to 10.
Their review demonstrated “these [randomized clinical trials] provide scientific evidence that supports the efficacy of turmeric extract (about 1000 mg/day of curcumin) in the treatment of arthritis.”
Due to the studies’ sample size and methodological quality, one cannot recommend curcumin as an arthritis treatment definitively. However, there is enough data to justify curcumin being used along with conventional medication and therapy. The results were promising enough to support larger clinical trials to study curcumin as a therapy for arthritis and other inflammatory conditions.
In a 2020 study, Paultre et al. sought to determine whether turmeric or curcumin extract affected pain and physical function in humans with osteoarthritis (OA) in at least one knee. They also wanted to compare the pain and function in these individuals with turmeric and non-steroidal anti-inflammatory drugs (NSAIDs).
To do this, they searched various databases to retrieve scientific abstracts and papers reporting on randomized controlled trials of humans with OA. The participants were given turmeric, NSAIDs, or neither turmeric nor NSAIDs. Based on strict inclusion criteria, ten studies were included in their analysis.
All ten studies showed the participants improved in pain and function with turmeric therapy. In three of the ten studies that compared turmeric to NSAIDs, there was no difference in pain or function of the participants. In addition, no significant adverse effects were found in the people who were given turmeric therapy.
In a 2014 study, Panahi et al. investigated whether patients with knee OA saw improvement when given curcuminoids. This six-week pilot clinical trial was randomized, double-blind, and placebo-controlled. Nineteen patients were given 1500 mg/day in 3 doses of curcuminoids, while twenty-one took a placebo.
The Western Ontario and McMaster Universities Arthritis Index (WOMAC), Visual Analog Scale (VAS) (WOMAC and VAS), and Lequesne’s pain function index (LPPI) were used to measure changes during the studies.
The WOMAC has 24 items, and the participant rates their difficulty on a scale of 0-4 for completing the activity.
The VAS measures pain intensity and is completed by the patient.
The LPPI was developed as an index of severity for osteoarthritis of the knee. The patient completes this questionnaire
Treatment with curcuminoids showed a greater reduction in scores in all questionnaires than placebo. The authors concluded, “.. curcuminoids represent an effective and safe alternative treatment for OA.
Final Thoughts on Curcumin for Rheumatoid and Osteoarthritis
Some studies have shown the anti-inflammatory properties of turmeric. Although more data and more clinical trials are needed to conclude curcumin is an effective treatment for Rheumatoid Arthritis & Osteoarthritis, studies have shown turmeric is generally safe.
Whether curcumin/turmeric extract may be worth trying in conjunction with your current treatment or therapy is worth discussing with your healthcare provider. Your physician can discuss potential side effects, medication interactions and recommend a daily dose of curcumin. When reading the product label of curcumin supplements, confirm there are no fillers added to the formulation.