Chronic headaches could be a sign of vitamin D deficiency, research suggests.
People with low levels of vitamin D are at twice the risk of chronic headaches.
These headaches are also twice as likely to occur in the winter months, when vitamin D levels are at their lowest in the body.
During the winter, less sunshine striking the skin means the body is not able to produce enough vitamin D.
The conclusions come from a Finnish study of 2,601 men.
It found that 68% had deficient vitamin D levels.
The current medications for migraine — painkillers — could be doing more harm than good in some cases.
People are frequently taking the wrong medication, or too much of it, the study’s authors write:
“Primary headaches, including migraine, are among the leading health problems and causes of disability in the modern working population.
Currently, there is a global trend in chronification of migraine and a growing number of cases of medication overuse headache due to improper use and/or overuse of painkillers.”
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The study was published in the journal Scientific Reports (Virtanen et al., 2017).