Cod liver oil is a popular supplement that has been around for centuries. It is extracted from the liver of cod fish and is rich in vitamins A and D as well as omega-3 fatty acids.
But the question remains – does cod liver oil really work? Let’s dive into the research.
What are the benefits of cod liver oil?
- Improved heart health: The omega-3 fatty acids in cod liver oil have been shown to reduce inflammation and lower triglycerides, both of which are risk factors for heart disease.
- Stronger bones: Vitamin D, found in high amounts in cod liver oil, is essential for bone health and can help prevent osteoporosis.
- Reduced inflammation: Omega-3 fatty acids have anti-inflammatory properties that can help alleviate symptoms of conditions such as arthritis and inflammatory bowel disease.
- Better brain function: Studies have suggested that omega-3s may improve cognitive function and reduce the risk of Alzheimer’s disease.
What does the research say?
While there is some evidence to support the benefits of cod liver oil, more research is needed to fully understand its effects on health.
One study published in the Journal of Nutrition found that taking cod liver oil improved bone mineral density in postmenopausal women. Another study published in the European Journal of Clinical Nutrition found that taking omega-3 supplements, including cod liver oil, reduced inflammation in patients with rheumatoid arthritis.
However, other studies have produced mixed results. A review published in the Cochrane Database of Systematic Reviews concluded that there is not enough evidence to support taking omega-3 supplements for preventing cardiovascular disease.
Are there any risks?
While generally considered safe, there are some potential risks associated with taking cod liver oil. One concern is the high levels of vitamin A found in some brands. Consuming too much vitamin A can lead to toxicity and cause symptoms such as nausea, dizziness, and headaches.
Additionally, because cod liver oil is derived from fish, there is a risk of contamination with pollutants such as mercury and PCBs. It’s important to choose a high-quality brand that has been tested for purity.
The bottom line
While the research on cod liver oil is not conclusive, there is some evidence to suggest that it may have health benefits such as improved heart health, stronger bones, and reduced inflammation. However, it’s important to weigh the potential benefits against the risks and to choose a high-quality brand that has been tested for purity. As always, it’s best to consult with your healthcare provider before starting any new supplement regimen.
