Deficiency of this vitamin can lead to very unhealthy results, and yet it is only naturally found in animal products.

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If it's going to be a very unhealthy day, you can take steps to avoid exercising outside or working outdoors strenuously.

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On Thursday, levels still hovered around the "very unhealthy" mark.

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Jackson's family has also denied suggestions that the pop star's life is unhealthy, insisting he is doing very well, particularly for someone who faces his unique pressures.

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However, the gold market is presently short-term overbought, technically, and a corrective pullback in prices very soon would not be surprising nor would it be unhealthy.

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The precious metals markets have had a very good week and profit-taking pullbacks heading into the weekend are not surprising, nor are they unhealthy from a technical perspective, given the recent solid price gains.

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