 [ 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 ] joe sounds like your doing a lot of great things to stay healthy there are 2 other areas that can have an impact on blood sugar levels that you might want to take a look at 1 sleep click on the word to see an article about this on webmd after reading that article and others look at your sleep habits are you consistently getting enough sleep 2 stress click on the word to see an article about this on webmd psychological stress can have a huge impact on both emotions and physical function problems in either one of these or both could cause blood sugar issues problems i would take a look at these 2 variables and continue to monitor your a1c with your physician best of luck and do not get frustrated sounds like your doing a lot of great work you might just need to adjust your sleep habits and stress management mark