Hi Samuel,It is the 3 day in the last week that I start having blurry vision and start feeling dizzy. That`s how it starts, a strange sensation in the head probably due to the slightly blurry vision then I start having a headache and nausea. It also comes with numbness in the tongue or in the hand. It takes around 2-3 hours to get better but even after the headache and other symptoms are gone I feel so tired like if I was through a very busy day of work. Is this anything I need to worry about? I am 32 years old, very active (go to gym 3 times a week) and eat very healthy. I am rarely sick and have no medical history that I could mention. The only thing maybe is that I always need to make sure that I eat regularly otherwise my blood sugar level drops and usually that`s when I get similar symptoms. Your advice would be much appreciated. Thank you, Olga