11 Feb 2019 --- Contrary to popular belief, a higher intake of sodium can increase lightheadedness instead of alleviating it. This is according to a new study from the Beth Israel Deaconess Medical Center (BIDMC), which examined the link between sodium intake and lightheadedness as part of the DASH-Sodium trial (Dietary Approaches to Stop Hypertension). Published in the Journal of Clinical Hypertension, the results challenge traditional ways of tackling low blood pressure-related dizziness.