Is Headache An Effect Of Cutting Sugar From Diet After Being Diagnosed With Atrial Flutter?

hi i have been told i have artial flutter waiting for specialist appointment.in the meantime have been priscribed asprin ,told to cut out drink i drank 3 glasses wine a night white ,ate chocolate every day like my sugar and am overweight ,

so no dairy ,no wine only 1 glass of red if i had to nosugar bread salt and as i have a interjestian problem cut down citrus foods and drink , no caffine after 3 days only eating potatoes fish and veg and chiken rice cakes i have a bad headacke is this the affect of no sugar ,as when i had aglass of red wine last night headcke was eaiser and went away