Low Vitamin D Linked To Frequent Headaches In Men

However, the study was conducted at a single point in time, so the researchers cannot tell which came first, the low vitamin D levels or headaches, the scientists said. It’s possible that people with frequent headaches may be less likely to spend time outside, and so they have less exposure to sunlight, the researchers said. However, this explanation may be less likely in Finland, where people overall have less exposure to sunlight, the researchers said.