Measuring the nicotine content in toenail clippings can help predict a woman's heart disease risk, a US study in nurses suggests. Analysis of toenails from more than 62,500 women showed double the level of nicotine in those with heart disease than those without the condition.The researchers said the test may be more accurate than simply asking a person about their smoking history. I guess looking at the above persons toenails not all results needed to be checked.
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