Conjugated linoleic acid (CLA)

What is conjugated linoleic acid (CLA)?

Conjugated Linoleic Acid (CLA) is a type of polyunsaturated fatty acid (PUFA) that is commonly found in dairy and meat products, particularly from grass-fed animals. CLA is believed to have a range of health benefits, including weight loss, improved insulin sensitivity, and reduced inflammation.

How does it work?

CLA is believed to work by increasing the body's metabolic rate and promoting the breakdown of stored fat for energy. It may also help to regulate blood sugar levels, improve immune function, and reduce inflammation in the body.

What are the active ingredients that are important for its medicinal properties?

The active ingredient in CLA is the linoleic acid molecule, which is a type of omega-6 fatty acid.

What forms does it come in?

CLA is available in supplement form, as well as in certain foods such as grass-fed beef and dairy products.

What if I have an imbalance or deficiency?

A deficiency of CLA is rare, but may occur in individuals who consume a low-fat diet or do not eat enough animal products. Imbalances or deficiencies may lead to a range of health issues, including poor metabolic function, insulin resistance, and inflammation.

When was it first used for medicinal purposes?

The health benefits of CLA were first discovered in the 1980s, and since then, numerous studies have been conducted to investigate its potential uses.

What does Conjugated linoleic acid (CLA) help with?

• Body fat reduction: CLA is best known for its modest but consistent ability to reduce body fat mass, particularly in the abdomen. Multiple trials show it can shift body composition toward less fat and more muscle, even without changes to diet or exercise — though results are more pronounced when combined with a healthy lifestyle.
• Lean muscle preservation: CLA helps the body hold onto muscle while losing fat, making it popular among athletes and those dieting. This muscle-sparing effect is one of the reasons it's often included in sports nutrition products.
• Metabolic syndrome support: Some research suggests CLA may help improve markers associated with metabolic syndrome — including blood lipids and body fat distribution. The c9,t11 isomer in particular appears to support healthier cholesterol ratios.
• Insulin sensitivity: Evidence on CLA and blood sugar is mixed. The c9,t11 form may support insulin sensitivity, while the t10,c12 form at high doses has occasionally been linked to modest reductions in insulin sensitivity. Standard supplement doses at 3–4g/day appear to be within a safe range for most healthy people.
• Immune system support: The c9,t11 form of CLA found naturally in grass-fed dairy has been associated with immune-modulating effects in both observational and early clinical research. It may help support balanced immune responses, though this area of research is less developed than the body composition work.
• Inflammation reduction: CLA from food sources — especially grass-fed dairy — has been linked to lower markers of chronic inflammation in observational studies. Supplement-based research is more limited, but the anti-inflammatory potential of the c9,t11 isomer is considered biologically plausible.
• Exercise performance and recovery: Some small trials suggest CLA may support muscle strength gains and recovery when combined with resistance training. Results are modest, and it's most useful as a complementary tool alongside a solid training and nutrition plan.
• Appetite and weight management: CLA may have a mild appetite-regulating effect, helping to reduce overall calorie intake in some people. This contributes to its role in weight management programs, though the effect is not dramatic on its own.

What can it help prevent?

CLA may help to prevent a range of health issues, including:

• Obesity and weight gain
• Insulin resistance and type 2 diabetes
• Cardiovascular disease
• Inflammatory disorders
• Certain types of cancer

Which foods are rich in it?

CLA is primarily found in grass-fed beef and dairy products, including milk, cheese, and butter. It may also be present in smaller amounts in other animal products, such as pork and chicken.

What are possible side effects?

CLA is generally considered safe when taken in recommended doses. However, some individuals may experience side effects such as:

• Upset stomach or digestive issues
• Headaches
• Fatigue
• Insomnia
• Increased risk of bleeding (in individuals taking blood-thinning medications)

What’s the recommended daily dose?

The recommended daily dose of CLA varies depending on the individual and the intended use. However, typical doses range from 1,000 to 3,000 mg per day.

How many days does it take to work?

The effects of CLA may vary depending on the individual and the intended use. However, some studies have suggested that it may take several weeks or months of regular use before significant benefits are observed.

What time of day is best to take it?

There is no specific time of day that is considered best for taking CLA. However, it is generally recommended to take it at the same time each day to maintain consistent levels in the body.

Is it best to take it with or without food?

CLA supplements can be taken with or without food, depending on individual preference. However, taking it with a meal may help to improve absorption and reduce the risk of digestive issues.