Lightheadness. they have ruled out vrtigo. they are checking my heart. it has been 6 months of these episodes. what else could it be?

Adrenal issue: Do you have lightheadedness when you get up? How many hours do you sleep? Do you sleep flat or on a 45 degree angle watching TV. Are you drinking enough water? Do you consume enough fruits? Do you have intake of Sea salt? Do you eat enough greens to get Vitamin B? These are all factors that your adrenals need. If you do not follow the regimen for your adrenal concerns, you will be lighhead