How to Lower A1C Levels Naturally

Call it what you will: hemoglobin A1C[1], glycosylated hemoglobin, HbA1c or just “A1C,” these numbers, known as A1C levels, play a huge role in how your diabetes is managed. It’s also used to diagnose diabetes[2], as well as prediabetes[3]. Your A1C is a blood test that provides information about your average blood sugar levels over the past three months. Your provider and diabetes care team use this number to gauge how things are going and if and how to tweak your diabetes treatment plan. For most people who have diabetes, the American Diabetes Association (ADA) recommends an A1C of less than 7%[4]. The American Association of Clinical Endocrinologists (AACE) advises a tighter goal of 6.5% or lower[5]. Your goal may be completely different, and that’s OK (just make sure you know what it is!).

Why lower your A1C?

A1C goals aren’t decided upon out of thin air. The targets that the ADA, AACE or your provider advise for you are based on clinical research, as well as other factors, such as your age, your overall health and your risk of hypoglycemia[6]. Landmark clinical trials, such as the Diabetes Control and Complications Trial (DCCT)[7] and Epidemiology of Diabetes Interventions and Complications (EDIC), for example, have correlated lowering A1C with a decrease in diabetes-related complications[8]. So, for every one point that you lower your A1C, you’ll lower your complication risk as follows:

• Eye disease[9] by 76%
• Nerve damage[10] by 60%
• Heart attack[11] or stroke by 57%
• Kidney disease[12] by 50%

It’s important to realize that your A1C levels reflects an average of your blood sugar numbers. Your A1C levels might be 6.7%, but that may be because you’re having a lot of low blood sugars, for example. For this reason, your A1C levels should be viewed as part of the picture, and not in isolation. Your blood sugar readings, frequency of highs and lows, and quality of life need to be considered as part of your overall diabetes management plan.

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How long does it take to lower your A1C levels?

Is it possible to lower A1C levels overnight? Well, the short answer is no. Unlike your blood sugars, which can go up or down in a matter of minutes, your A1C will take some time to change. Remember what your A1C measures: your average blood sugars over the past three months. The good news is that if your A1C is on the high side, say, 10% or higher, it will likely start to drop within two to three months (in other words, the higher it is, the faster it comes down). On the other hand, if your A1C is 7.5%, it may take a little longer to lower A1C levels.

Seven ways to lower your A1C levels

There are a number of ways to get your A1C down. Taking medication is one way (and the reality is that many people with diabetes need to take medication), but lifestyle measures are effective, too. Here’s a rundown of what can work.


What and how much you eat factors in to your blood sugar control and, in turn, affects your A1C. There’s so much controversy about the best “diet” for diabetes and there’s no shortage of arguments on this topic. However, realize that there is no one “diet” that will work for everyone. And despite popular belief, the American Diabetes Association does not prescribe any one type of eating plan. In actuality, they state that many different types of eating patterns, including lower carb[15], vegetarian[16], DASH[17] and Mediterranean[18] can be beneficial. One of the best ways to figure this all out is to meet with a registered dietitian, preferably one who has experience in working with people who have diabetes. Your doctor can provide you with a referral to meet with a dietitian. In the meantime, consider the following for lowering A1C levels:

1. Come up with a plan

Getting into the habit of eating three meals a day, and possibly some snacks, is a great way to get started on controlling A1C levels. In addition, aiming to eat your meals at about the same times each day will make it easier to stabilize your blood sugars. Try not to skip meals or delay eating your meals as much as possible.

2. Be carb choosey

Carb naysayers will proclaim that carb foods are evil and should be avoided as much as possible. But reality and research shows otherwise. It’s difficult for most people to cut out carbs and it’s not the smartest thing to do from a nutrition standpoint, as carb foods can and do provide important nutrients that you won’t get from eating just protein and fat. However, you do need to consider the types of carbs you eat. Refined carbs, such as white bread, white rice, chips, soda, cookies and other sweets have been stripped of their fiber and most of their vitamins and minerals; contain “empty” calories; and can cause “spikes” in blood sugars[19]. Eating refined and processed carbs has been linked to an increase risk of diabetes, heart disease[20], inflammation and obesity. The carbs to focus on are unrefined, meaning, they retain their fiber, vitamins, minerals and other plant compounds that promote health. These carbs include whole grains, whole fruits and vegetables and legumes (beans and peas).

3. Be carb consistent

Along with eating healthy carb foods comes the concept of carb control for controlling A1C levels. Eating too much carb from any food source can mean higher blood sugars and a higher A1C. Aim to eat the same amount of carb at your meals and snacks each day. Many people count grams of carb and aim for a range at their meals — for example, 30–45 grams per meal. Doing so helps you keep your blood sugars steady, whether you take diabetes medicine or not. Because people do need different amounts of carb, it’s best to check with a dietitian as to what your carb goals should be.

4. Watch portions

Eating too much carb is one thing; eating too much protein or fat is another. Keep an eye on your portions of all of the foods that you eat, especially if you are trying to lose weight[21] (losing weight, if you need to, can help lower your blood sugars and A1C). Using the plate method[22] or sample menus are a couple of ways to help you get on track with an eating plan.

Being active[23]

We’re all bombarded with messages to exercise or be physically active[24], and after a while, it’s easy to tune them out. But if your goal is to lower your A1C, it’s time to pay attention. Yes, carb counting[25] and losing weight helps, but don’t overlook the power of physical activity, too. Exercise provides numerous health benefits, including a lower risk of heart disease, weight loss, increased energy and a lower risk of depression[26] and stress. Add lower blood sugars to the list.

5. Come up with a plan

If you haven’t been active for a while, you might be wondering how to get started. The first step is to think about what you might like to do. One of the best ways to get moving is to start walking[27]. All you need is a good pair of sneakers. However, bicycling, swimming, using an exercise video or taking a Zumba class, for example, are all great ways to be active[28].

6. Commit to 150 minutes each week

One reason why people don’t exercise is because they think they need to spend hours at the gym, huffing and puffing away. Not true. The goal is to aim for doing at least 150 minutes of physical activity each week[29], or 30 minutes, five days a week. And the good news is that you can break those 30 minutes into 10-minute segments, three times a day. If you haven’t been exercising, start slowly and build up, five minutes at a time. By the way, don’t forget to check with your doctor before starting any new exercise program.

7. Combine cardio and resistance

Exercises that strengthen your heart and lungs and that use large muscle groups are often called aerobic or cardio exercises. These include walking, swimming and bicycling[30]. Ideally, your exercise routine should also include resistance[31], or strengthening, exercises, such as using hand weights, resistance bands, calisthenics or weight machines. Both types of exercise work in different ways to promote health, but they both lower blood sugars and A1C.

More on how to lower your A1C next week!

Want to learn more about A1C? Read “How to Lower Your A1C: More Steps You Can Take,”[32] “What Does A1C Stand For?”[33] and “H-B-A-1-C: What It Is and Why It Matters.”[34]

En Español: Cómo Reducir los Niveles de A1C Naturalmente[35]

  1. hemoglobin A1C:
  2. diagnose diabetes:
  3. prediabetes:
  4. less than 7%:
  5. 6.5% or lower:
  6. hypoglycemia:
  7. Diabetes Control and Complications Trial (DCCT):
  8. diabetes-related complications:
  9. Eye disease:
  10. Nerve damage:
  11. Heart attack:
  12. Kidney disease:
  13. sign up for our free newsletters:
  14. Diet:
  15. lower carb:
  16. vegetarian:
  17. DASH:
  18. Mediterranean:
  19. “spikes” in blood sugars:
  20. heart disease:
  21. lose weight:
  22. plate method:
  23. Being active:
  24. exercise or be physically active:
  25. carb counting:
  26. depression:
  27. walking:
  28. great ways to be active:
  29. least 150 minutes of physical activity each week:
  30. bicycling:
  31. resistance:
  32. “How to Lower Your A1C: More Steps You Can Take,”:
  33. “What Does A1C Stand For?”:
  34. “H-B-A-1-C: What It Is and Why It Matters.”:
  35. Cómo Reducir los Niveles de A1C Naturalmente:

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Amy Campbell: Amy Campbell is the author of Staying Healthy with Diabetes: Nutrition and Meal Planning and a frequent contributor to Diabetes Self-Management and Diabetes & You. She has co-authored several books, including the The Joslin Guide to Diabetes and the American Diabetes Association’s 16 Myths of a “Diabetic Diet,” for which she received a Will Solimene Award of Excellence in Medical Communication and a National Health Information Award in 2000. Amy also developed menus for Fit Not Fat at Forty Plus and co-authored Eat Carbs, Lose Weight with fitness expert Denise Austin. Amy earned a bachelor’s degree in nutrition from Simmons College and a master’s degree in nutrition education from Boston University. In addition to being a Registered Dietitian, she is a Certified Diabetes Educator and a member of the American Dietetic Association, the American Diabetes Association, and the American Association of Diabetes Educators. Amy was formerly a Diabetes and Nutrition Educator at Joslin Diabetes Center, where she was responsible for the development, implementation, and evaluation of disease management programs, including clinical guideline and educational material development, and the development, testing, and implementation of disease management applications. She is currently the Director of Clinical Education Content Development and Training at Good Measures. Amy has developed and conducted training sessions for various disease and case management programs and is a frequent presenter at disease management events.

Disclaimer of Medical Advice: Statements and opinions expressed on this Web site are those of the authors and not necessarily those of the publishers or advertisers. The information, which comes from qualified medical writers, does not constitute medical advice or recommendation of any kind, and you should not rely on any information contained in such posts or comments to replace consultations with your qualified health care professionals to meet your individual needs.