The Journal of Laryngology & Otology, 125(5), 465-469 Vitamin D, innate immunity and upper respiratory tract infection. Current Opinion in Pharmacology, 10(4), 482–496 Vitamin D: modulator of the immune system. Baeke, F., Takiishi, T., Hannelie, K., Gysemans, C., & Mathieu, C.Journal of Investigative Medicine: The Official Publication of the American Federation for Clinical Research, 59(6), 881–886 You can learn more about how we ensure our content is accurate and current by reading our editorial policy. Healthline has strict sourcing guidelines and relies on peer-reviewed studies, academic research institutions, and medical associations. Research also suggests that omega-3 fatty acids may improve overall mood and brain function. A large study in over 20,000 people in Norway revealed that adults who regularly took cod liver oil were roughly 30 percent less likely to have symptoms of depression than those who did not. Reducing DepressionĬod liver oil is rich in omega-3 fatty acids, which have been shown to reduce depressive symptoms in people suffering from major depression. It is thought that the high omega-3 fatty acid content of cod liver oil could help improve blood flow to the eyes, keeping your kids’ eyesight strong and healthy for a long time. Scientists are exploring the relationship between cod liver oil supplementation and glaucoma. It can lead to vision loss or even blindness. Glaucoma is an eye disease that can damage the optic nerve. It’s also an antioxidant and could prevent the damage that leads to glaucoma. Vitamin A is especially important for preserving normal vision. Both of these vitamins are essential for maintaining healthy eyesight over the long term. Protecting Eye SightĬod liver oil is rich in vitamins A and D. In research published in the Journal of the American College of Nutrition, cod liver oil supplements decreased trips to the doctor for upper respiratory illnesses by 36 to 58 percent. It is theorized that an immune system boost comes from the oil’s high content of vitamin D, though research has not yet shown this. Preventing InfectionsĬod liver oil could mean fewer bouts of the cold and flu for your child, and fewer trips to the doctor. There’s not yet enough evidence to show that vitamin D deficiency is definitely linked to type 1 diabetes or that cod liver oil can reduce the risk. In one article, researchers found that the odds of type 1 diabetes were more than two times higher in children whose mothers had the lowest levels of vitamin D, compared to children of mothers with high levels of vitamin D.Īlthough limited research has been conducted, all of the above studies show possible associations. Other studies point to the mother’s vitamin D deficiency as a culprit in type 1 diabetes. The effect may be attributed to cod liver oil’s high vitamin D content.Ī meta-analysis of 11 different studies found that children who took vitamin D supplements during their first year of life, including cod liver oil or a supplement with vitamin D, had a significantly lower risk of type 1 diabetes. A research study conducted in Norway has shown that taking cod liver oil in the first year of life may be associated with a lower risk of type 1 diabetes. Type 1 diabetes is an autoimmune disease that usually occurs in children, but its exact cause isn’t known. Rickets is still a major public health concern in many developing countries. Along with the use of cod liver oil, these changes have made rickets a rare disease in the United States, but a few cases are seen today. Vitamin D drops for children are also widely available. In the 1930s, people in the United States began fortifying their dairy milk with vitamin D. Once mothers began including cod liver oil in their child’s daily routine, incidence of rickets dropped dramatically. Before the discovery of cod liver oil, many children suffered from deformed bones. The best source of vitamin D is sunlight, but people who live in northern latitudes often don’t get a lot of sun during the winter months. In rickets, the bones fail to mineralize, which leads to soft bones and skeletal deformities in children, including: Preventing RicketsĪt one point in time, rickets was a common disorder of the bones caused by a severe deficiency of vitamin D.
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