 [ Symptoms ] how do i lower my hemoglobin a1c hba1c from 5 8 if my diet and lifestyle is already healthy  i am a 56 year old white man who does not have diabetes    i get 10 12 hours of exercise a week    hiking biking yoga pilates and weights    i am not overweight    i have a slim muscular physique    i am 59 5 and 160 pounds    my diet is good   no alcohol no processed foods no added sugar my diet consists almost entirely of fish chicken vegetables fruits nuts berries seeds and whole grains [ Disease ] an allergist or primary care provider can do allergy testing they will run either a skin test or draw blood and in either sample they will look for ige antibodies to particular foods if there are no ige antibodies to the foods the child is likely not allergic