Causes of Dizziness: Diet, Exercise & Health Conditions

What causes sudden dizziness or lightheadedness? Factors range from insulin spikes and nutritional deficiencies to positional changes and physical exertion in the cold.

Jogger resting with bottle of water, Murcia, Spain, close-up

Dizzy & Lightheaded When Exercising

If you feel dizzy or lightheaded, you may have low blood pressure. During exercise, your body pumps more blood than usual. When you stop exercising abruptly, your heart beats more slowly but your blood vessels remain dilated, leading to lower blood pressure.

Read more →