A member asked:

I get lightheaded after standing or sitting up after laying or sitting. but, it goes pitch black and my sight slowly fades back. what's wrong?

A doctor has provided 1 answer

Under-hydration: Your symptoms are suggestive of a drop in blood pressure due to change in posture. At your age, the most likely explanation is you not drinking enough water. Wish you good health! - Have a diet rich in fresh vegetables, fruits, whole grains, milk and milk products, nuts, beans, legumes, lentils and small amounts of lean meats. Avoid saturated fats. Drink enough water daily, so that your urine is mostly colorless. Exercise at least 150 minutes/week and increase the intensity of exercise gradually. Do not use tobacco, alcohol, weed or street drugs in any form. Practice safe sex, if you have sex. Get HPV vaccine

Answered 6/5/2018

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