The answer to this question depends on how you define “reversed”. Unfortunately many folks interpret this phrase as meaning cured, however there is no cure for type 2 diabetes at this time. A cure means that the diabetes goes away completely and never comes back again, even if you gain a ton of weight, eat 4 hot fudge sundaes a day and go on high dose steroids such as prednisone. If you have type 2 diabetes and are overweight and then lose 10, 20 or 30 pounds by reducing your caloric intake and/or exercising, for example, your glucose values may go into the completely normal range and some (or all) of your diabetes medications may not be needed. In this scenario you could say you “reversed” your diabetes by lifestyle changes, but “remission” would be a much better and descriptive word choice than “reversed”. At this point in time your type 2 diabetes is not cured but completely under control. Unfortunately, it could come back with time and reversal of the improved lifestyle.
When you see companies stating they can reverse your diabetes and get you off of your medications, be wary of these claims. Additionally, getting off your medications should not be your primary goal. Some folks who have had type 2 diabetes for a long time, or who have a strong hereditary influence, may not get off medications even if they are doing everything right. For every person with type 2 diabetes, the primary goal is to try to get to the healthiest body weight they can and exercise in moderation. Being totally adherent with medications is also key.