Cod Liver Oil Concerns
As soon as used primarily as a vitamin complement for youngsters, cod liver oil is extra probably now to be promoted for older individuals affected by extreme osteoarthritis. Fish oil, wealthy in omega-Three fat, helps counter irritation, so some individuals with one other type of arthritis, rheumatoid arthritis (an inflammatory illness), take fish oil dietary supplements to assist cut back signs. There’s additionally an inflammatory aspect in osteoarthritis, it’s now identified, and thus some individuals assume that fish oil, particularly cod liver oil, is likely to be helpful. It is also generally claimed that cod liver oil prevents coronary heart assaults, strokes, Alzheimer’s illness and melancholy, and fights most cancers.
No stable analysis has ever proven that cod liver oil prevents most cancers, Alzheimer’s or melancholy, however there’s some proof that fish oil, together with cod liver oil, could ease the ache of arthritis and enhance joint stiffness. Like all fish oil dietary supplements, the oil could assist cut back the danger of coronary heart illness and stroke, particularly in individuals who have already had a coronary heart assault or are at excessive cardiovascular threat.
Potential cod liver oil issues
There have been considerations that cod liver oil, bottled or in capsule kind, can weaken bones and trigger delivery defects due to its very excessive ranges of vitamin A. For instance, a Norwegian research of middle-aged girls, printed within the American Journal of Epidemiology, discovered that those that took cod liver oil as kids are twice as prone to have low bone mass as girls who didn’t.
Though analysis has been inconsistent, some research have discovered that as little as 6,000 IU of vitamin A day by day can intervene with bone progress and promote fractures. And ladies of childbearing age mustn’t exceed 10,000 IU of vitamin A due to the danger of delivery defects. Only one teaspoon of cod liver oil could have four,500 IU of vitamin A, and the usual dose is one to 3 teaspoons a day. Capsules of cod liver oil include much less oil, however the vitamin can nonetheless add up, particularly on prime of the quantity you get from meals and from a multivitamin, for those who take one.
One other potential downside: Because the oil is produced from livers, which filter out toxins, there’s better concern about contaminants (comparable to PCBs), although the oil is meant to be purified.
Backside line: Do not take cod liver oil, except the label says that the vitamin A content material has been diminished. Fish oil dietary supplements, and fish itself, should not have a lot vitamin A, which is concentrated within the liver (in beef and hen liver as effectively).