Quick, all you savvy readers who know about vitamins, without any further investigation, which antioxidant vitamin listed below is NOT known to exert therapeutic benefits for coronary artery disease?
- Vitamin A
- Vitamin E
- Vitamin C
- Vitamin D
- Vitamin K
There is no trick to the above question. It is well documented that vitamins E, C, D and K may be beneficial in preventing and treating coronary artery disease. Most astute followers of vitamin therapy would likely say vitamin A shouldn’t even be on the list.
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A couple of years ago (2016) researchers evaluated circulating blood levels of vitamin A among 1499 patients with confirmed coronary artery disease over a 4-year period, 208 who died of cardiovascular disease (295 deaths from all causes). Blood serum vitamin A levels were significantly lower among those who died (21 nanomole/liter) than those who survived (39 nanomole/liter). Those subjects with the highest blood levels of vitamin A were 44% less likely to die for any reason and 40% less likely to die from cardiovascular disease. [Circulation Research 2016]
A prior study published in 2014 revealed the following:
Source: Nutrition Metabolism Cardiovascular Disease Nov 2014
This study suggests there is a modest increased risk for mortality due to excessive vitamin A and a strong risk for death (2.5 to almost 3.0 fold) when vitamin A levels are low among subjects with coronary artery disease.
Two years earlier (2014) there was a corroborative study showing individuals with the lowest blood concentration of vitamin A were 265% more likely to experience a fatal or non-fatal heart attack.
Source: Atherosclerosis…