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A new study has revealed that the major cause of headaches may be diets containing high salt content.
The study found that people who ate foods high in sodium (8 grams a day) had nearly one-third more headaches than people who ate foods low in sodium (about 4 grams a day). The difference persisted regardless of whether the volunteers ate a standard North American diet or one designed to lower blood pressure.
Study co-author Lawrence Appel, M.D., M.P.H., director of the Welch Center for Prevention, ...