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A moderate amount of caffeine may help a person feel more alert and awake, but excessive consumption does present health risks. For adults in good health, up to 400 milligrams of caffeine per day is generally acceptable, according to Mayo Clinic.


Causes of dizziness include infections, Meniere's disease, Dandy's syndrome and benign paroxysmal positional vertigo, according to WebMD. Other causes include side effects of medication, motion sickness and inner ear disturbances, states Mayo Clinic.


A dizzy person should sit or lie down, avoid bright lights, and avoid sudden changes in position, notes WebMD. A person who feels dizzy when standing up should stand up slowly. Call a healthcare professional if the dizziness is a new symptom, dizziness has changed or do...


Caffeine is harmful when taken excessively. Negative health effects of caffeine include difficulty in sleeping, increased anxiety, restlessness, trembling muscles and a rapid heart rate.


To get rid of dizziness, visit a doctor to determine the symptoms and the condition causing the dizziness, recommends Mayo Clinic. Dizziness usually subsides on its own within a few weeks, so it does not always require treatment. Common treatments for dizziness include ...


Seasonal allergies can make a person dizzy, according to Healthline. Sinus congestion related to allergies can cause an imbalance of the inner ear, resulting in dizziness or vertigo. Congestion can also block the eustachian tube.


Rest and hydration are potential remedies for dizziness, according to WebMD. These remedies are ideal if the dizziness occurs while suffering from a cold or the flu.