Vitamin D deficiency has been linked to many chronic medical conditions, including asthma and chronic obstructive pulmonary disease (COPD). In some cases, more severe vitamin D deficiency is associated with more severe chronic illness.
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Vitamin D supplements don't prevent COPD…
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Vitamin D deficiency has been linked to many chronic medical conditions, including asthma and chronic obstructive pulmonary disease (COPD). In some cases, more severe vitamin D deficiency is associated with more severe chronic illness.