In general, morning dizziness is a non-serious condition, which happens to a lot of us and shouldn’t be a cause for concern. Healthline highlights dehydration, low oxygen levels, and low blood sugar as the three most common causes of dizziness symptoms.
Often, nighttime dehydrated is a result of drinking alcohol before bed, exacerbated by not replacing fluids upon waking up in the morning. Other causes include exercising without replenishing lost sweat and spending all day in a hot or poorly ventilated environment. Beyond dizziness, too little fluid in your system can also show up through symptoms of confusion, and a noticeable drop in the need to urinate.
According to Dr. Grossman of Harvard Medical School, “when you don’t have enough blood sugar, every system in your body goes on reserve to use as little energy as possible, including your brain, making you feel lightheaded or confused.” Low blood sugar in the mornings may be a signal to think a little more carefully about your diet and mealtime schedule. If dizziness is blood sugar-related, a good breakfast, including some freshly squeezed fruit juice, should help.
Sleep apnea is a condition that causes you to stop breathing for several seconds at a time throughout the night. That lowers oxygen levels in your blood, which can make you dizzy. Mild stages of heart failure—or simply age—can also cause a drop in blood pressure, leading to similar symptoms, especially when transitioning from lying to standing.