Cod liver oil rediscovered
Cod liver oil, once considered an old-fashioned remedy, is enjoying a comeback among today’s health professionals, writes Toni Jordan.
In our grandparents’ time, it was normal for children to line up in the kitchen each day for their regular dose of cod liver oil, taken straight off the spoon. Now, in 2008, this healthy habit is undergoing a revival – and for good reason too. Cod liver oil is a powerful natural supplement that’s packed with nutrients scarce in modern diets, and researchers are also discovering new benefi ts for this old favourite.
Who benefi ts from cod liver oil?
Vitamin D is known as the sunshine vitamin because it is produced by the skin in response to ultraviolet rays. These days, everyone is aware we need to limit our sun exposure and use sunscreen to reduce our risk of skin cancer, but doing this can also dangerously lower our vitamin D levels. Vitamin D supplementation is often recommended during winter, especially for older people whose thinner skin is not as efficient at manufacturing vitamin D. People who are housebound, live in nursing homes or work long hours and don’t have sun exposure every day are also ideal candidates for cod liver oil supplementation. Cod liver oil is an excellent supplement for pregnant women, but they shouldn’t exceed the dosage on the package.
Essential ingredients
Cod liver oil is primarily a high-concentration, natural source of the vitamins A and D. Vitamin D protects against many forms of cancers, in particular, colon cancer. Vitamin D is also essential in building strong bones and fi ghting osteoporosis, due to its role in promoting calcium absorption. Some experts even believe that our current osteoporosis epidemic is as much the result of vitamin D deficiency as it is a lack of calcium. As a bonus, cod liver oil also contains the omega-3 fatty acids EPA and DHA, which have important roles in preventing inflammation and boosting cardiovascular health.
Cod liver oil and depression
A recent study by Norwegian scientists has found a fascinating connection between cod liver oil supplementation and depression. The researchers looked at almost 22,000 people and analysed their cod liver oil usage, as well as other factors that might influence depression, such as smoking, coffee and alcohol consumption, age, gender, education level and physical activity. The study found that regularly taking cod liver oil reduced the risk of depression by a whopping 30 per cent – an effect that may be due to the omega-3 fatty acids EPA and DHA.
Choosing your cod liver oil
High pollution levels in the world’s oceans are a sad reality, so care must be taken in choosing your brand of cod liver oil. Make sure the oil you select is routinely tested for heavy metal contamination, especially for mercury, lead and cadmium. Many people prefer a liquid oil to a gelatine capsule. Liquid oils do have advantages; they are cheaper and easier to swallow for many people. If you choose a liquid oil, make sure it’s packaged in an opaque container, since exposure to light can turn the oil rancid. When swallowing cod liver oil off the spoon, aim for the back of the tongue where there are fewer taste buds, or mix the oil with your favourite juice.
Toni Jordan, BSc, Dip BA, has 15 years’ experience in the natural medicine industry. She has lectured across Australia and overseas and is now a freelance writer and consultant based in Melbourne.