Timing Your Meals and Insulin Doses Properly Can Help Keep Your Blood Sugar Steady (2024)

If you have diabetes, your main goal is to control your blood sugar. A daily routine of when you eat and when you take your insulin will make it a lot less likely for your blood sugar to peak and valley.

When your doctor discovers you have diabetes, they and your medical team will work with you on:

  • What you should eat
  • Which medicines you need
  • How often you should check your blood sugar
  • The role of exercise and weight loss

Timing is big when you take insulin. For one thing, your meals need to match up with your insulin dose.

Food

What you eat determines how much sugar goes into your bloodstream and how quickly it gets there. Carbohydrates, like bread and potatoes, have the biggest and fastest impact. But when you eat is just as important.

If you eat the same amount of food (especially carbs) at the same time every day, that will help your blood sugar stay on an even keel. There’s another benefit: With well-planned meals at regular times, you’re more likely to eat right. When you feel like you’re starving, you may gobble up whatever’s handy, even if it’s not good for you. Or you may eat too much.

For most people with diabetes, mealtimes should space out through the day like this:

  • Have breakfast within an hour and half of waking up.
  • Eat a meal every 4 to 5 hours after that.
  • Have a snack between meals if you get hungry.

A snack before bedtime may help you.

You don’t have to figure out the menus and times on your own. To help create a plan tailored to you, your doctor may send you to a nutrition specialist. Theymay call it a registered dietitian. Besides thinking about your nutrition, your dietitian will help match you up with foods that you like and that fit your budget.

If you get your health care through Medicare, Part B covers medical nutrition therapy with a nutrition specialist for people with diabetes.The coverage includes a first session to work out the plan, plus follow-ups to check how it’s working. If you have different insurance, ask whether it will pay for this before you start.

After your doctor and dietitian help you sketch out your meals, you may want to make out a daily action plan that will help you stay on track. Build it around specific things that will be doable. It might say that on certain days of the week, you’ll have a healthy snack (such as fruit) in the afternoon. Or it might say that on certain days of the week, you’ll count the carbs you eat at dinner.

Medicine

What meds you'll take will depend on what kind of diabetes you have. Your doctor might prescribe insulin, which you’d probably take by giving yourself a shot. Or you may need other medicines that control your blood sugar. You might take those through either pills or shots.

Your doctor may plan your daily doses to match the amount of carbs you’re eating. In that case, your meals and medicine might need to be timed correctly. If they aren't, your blood sugar could spike or drop.

The schedule will depend on what your doctor prescribes. You might just need to take your insulin once a day, or you might need to take it more times.

If your doctor prescribes more than one dose each day, they may include:

  • An overall one called a basal dose.
  • Other doses at mealtimes. Each of these is called a bolus.

Different medicines may need to be taken at different times. For instance, if it’s an extended-release pill, you might swallow one each morning. Other medicines need to be taken while you’re eating.

Extra Help: Exercise

Along with the right food and medicine, working out can help you control your diabetes. Physical activity will:

  • Lower your blood sugar
  • Lower your blood pressure
  • Improve your blood circulation
  • Burn calories

Your blood sugar tends to be highest about an hour after you have a meal or snack. After you eat, a little exercise will help your body handle that. Why? When your muscles go into action, blood sugar helps fuel them.

You can get the benefit without doing anything strenuous. All you need is 10 to 15 minutes of mild activity, such as:

  • A short walk
  • Walking the dog
  • Shooting a basketball
  • Cleaning up the kitchen

If you want to get into a more vigorous exercise routine, check with your doctor first. Strenuous activity can make your blood sugar fall. You don’t want that. Your medical team can help you build exercise into your daily plans for eating and medicine.

Checking Your Blood Sugar

Your meals, medicine, and exercise all revolve around your blood sugar. So you’ll need to test it regularly.

Your doctor will tell you how many times to do it each day. It'll depend on the kind of diabetes you have and how much insulin or other medicine you’re taking.

If you’re taking insulin several times a day, you may need to do a test before each meal and before you go to bed.

If you’re taking long-acting insulin, you may only need to test before breakfast and before dinner.

If you’re taking other medicine but not insulin, you may not need a test every day.

Keep extra-close watch on your blood sugar if you do vigorous exercise. Physical activity can affect your level for hours; even the next day. You may need to check your blood sugar before, during, and after each workout.

Timing Your Meals and Insulin Doses Properly Can Help Keep Your Blood Sugar Steady (2024)

FAQs

How do meals and insulin affect your blood sugar levels? ›

Carbs can have a big impact on blood glucose. Essentially, it's the balance of the amount of insulin in your body and the carbs you eat that determine your blood glucose. So whether you choose whole carbs or empty carbs, you'll start to see (and feel) the impact on your body.

Why is it important to give insulin before meals? ›

Insulin shots are most effective when you take them so that insulin goes to work when glucose from your food starts to enter your blood. For example, regular insulin works best if you take it 30 minutes before you eat.

How does insulin keep blood sugar stable? ›

Insulin reduces the body's blood sugar levels and provides cells with glucose for energy by helping cells absorb glucose. When blood sugar levels are too low, the pancreas releases glucagon. Glucagon instructs the liver to release stored glucose, which causes the body's blood sugar levels to rise.

How do you stabilize blood sugar and insulin? ›

How to maintain steady blood sugar throughout the day
  1. Exercise regularly. ...
  2. Maintain a healthy body weight. ...
  3. Reduce your sugar intake. ...
  4. Limit refined carbohydrates. ...
  5. Choose high-fiber foods. ...
  6. Stay hydrated. ...
  7. Prioritize sleep. ...
  8. Practice stress management techniques.

How does insulin regulate blood sugar levels? ›

Most of this glucose is sent into your bloodstream, causing a rise in blood glucose levels, which signals your pancreas to produce insulin. The insulin tells cells throughout your body to take in glucose from your bloodstream. As the glucose moves into your cells, your blood glucose levels go down.

What is the meal timing for diabetics? ›

For most people with diabetes, mealtimes should space out through the day like this: Have breakfast within an hour and half of waking up. Eat a meal every 4 to 5 hours after that. Have a snack between meals if you get hungry.

What happens if you don't eat before taking insulin? ›

Take insulin, but don't eat: Rapid-acting and short-acting insulin injections should be taken just before or with meals. Your blood sugar rises after meals. Taking rapid-acting or short-acting insulin without eating could lower your sugar to a dangerous level. Inject insulin in an arm or leg just before exercise .

What happens if I eat immediately after taking insulin? ›

Research shows that the best time to take mealtime insulin is 15 to 20 minutes before you eat a meal. Taking mealtime insulin after your meals may put you at a greater risk of low blood glucose, or hypoglycemia. However, don't panic if you forget to take your insulin before your meal.

How to reduce blood sugar level immediately? ›

The fastest way to lower blood sugar is to take fast-acting insulin medication. Exercise can also help to bring down blood sugar levels quickly. Diet and lifestyle changes can help manage overall blood sugar levels, but for immediate action, prescription medication or medical assistance may be necessary.

Why is insulin important? ›

Insulin's main job is to move glucose from our bloodstream into the body's cells to make energy. If you don't have enough insulin, glucose builds up in your bloodstream rather than getting into your cells to provide energy.

What should I eat if my sugar is high? ›

5 Superfoods to Lower Your Blood Sugar
  • Berries. Don't make your trip to the store fruitless. ...
  • Go nuts. That's right—go ahead and snack on almonds, cashews or even pistachios. ...
  • Leafy greens. ...
  • Non-starchy vegetables. ...
  • Whole grains.

How to flush sugar out of your body overnight? ›

Stay hydrated. The more water you drink, the more sugar will rinse from your body. Eat a diet featuring lean proteins (fish, chicken, cheese sticks, etc.) combined with high-fiber vegetables (leafy greens, cauliflower, cabbage, etc.).

How do I keep my blood sugar level stable? ›

Eating protein — from meat and fish, tofu, nuts, eggs, and cheese — with carbs can slow that flow of glucose and help stabilize blood sugar. “Proteins hold back the sugars, slow them down, and then release them into the bloodstream slowly so that your blood sugar stays in a more normal range,” O'Meara says.

What should diabetics drink first thing in the morning? ›

Water is the best all-round drink. If your family likes flavoured waters, make your own by adding a squeeze of lemon or lime, or strawberries.

What is the relationship between food and insulin? ›

When people eat a food containing carbohydrates, the digestive system breaks down the digestible ones into sugar, which enters the blood. As blood sugar levels rise, the pancreas produces insulin, a hormone that prompts cells to absorb blood sugar for energy or storage.

How quickly does insulin affect blood sugar? ›

Short-acting insulin begins to lower blood glucose levels within 30 minutes, so you need to have your injection 30 minutes before eating. It has its maximum effect 2 to 5 hours after injection and lasts for 6 to 8 hours.

How long does blood sugar stay elevated after eating? ›

Your blood sugar level rises immediately after eating a meal or snack (Figure 2). In a healthy person, insulin then starts working, and the blood sugar level returns to the pre-meal level 2 hours after eating. In untreated diabetes patients, the blood sugar level does not return to the pre-meal level of its own accord.

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