This advice is likely founded in a concern for vitamin D levels.

The recent study examined the suicide and self-harm risk reported for veterans prescribed supplements through the VA.

The control (no known supplement) population had a suicide and self-harm rate of 0.36%.

Vitamin D Supplements May Help Reduce Risk of Suicide Among Veterans

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That fell to 0.2% in the treated groups.

There are limits to this study.

Causation is not possible to infer from the data.

Vitamin D Supplements May Help Reduce Risk of Suicide Among Veterans

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