Excess vitamin A may prevent foetal formation of blood cells

The study increases our understanding about why excess vitamin A is harmful but current recommended limits are still safe, say researchers Excessive retinoic acid - a molecule derived from vitamin A - can prevent the healthy development of blood in embryos, a team of Swedish researchers have found. While past studies have established that excessive vitamin A intake can be dangerous for the foetus - with recommended limits of intake for pregnant women adjusted accordingly - the effect on blood was previously unknown.

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