does intermittent fasting help with insulin

Does Intermittent Fasting Help With Insulin?

Written by Andrew Brewer. ⚕️Reviewed and fact checked by our medical team.

does intermittent fasting help with insulin

You’ve probably heard that a lot of people are using intermittent fasting to lose weight. But did you know that the most significant benefit of intermittent fasting is that it improves your metabolic health by lowering your insulin resistance?

Intermittent fasting has a lot of health benefits, including weight loss and insulin resistance. It also helps improve your heart and brain health and lowers your risk for diseases like cancer and Alzheimer’s.

Key Takeaways

  • Intermittent fasting can improve your metabolic health by lowering your insulin resistance. This approach helps stabilize blood sugar levels and promotes weight loss, among other health benefits.
  • Insulin is a hormone produced by the pancreas that helps regulate blood sugar levels. When there’s too much insulin in the body, cells can become resistant to it, which can lead to high blood sugar levels and an increased risk of developing diabetes.
  • The 16:8 fasting schedule is a common intermittent fasting method used to improve insulin resistance. It involves fasting for 16 hours and eating within an 8-hour window. However, it’s essential to talk to a doctor before starting any fasting plan, especially if you have underlying medical conditions.
  • It’s crucial to choose healthy foods during your eating window, drink plenty of water, and exercise regularly to support your overall health while fasting.
  • Using a fasting app can be helpful for tracking your fasting and eating windows, but it shouldn’t replace medical advice. If you experience severe symptoms, it’s best to consult a doctor immediately.

What is Insulin?

Insulin is a hormone that is produced by the pancreas. Your body breaks sugars and carbohydrates down into glucose and sends them into your bloodstream. If you overeat, this causes a spike in glucose. Then, your pancreas produces insulin to tell your cells to absorb the glucose, and the excess glucose is stored as fat.

Insulin is what tells your body to store fat. If you eat all day long, your body doesn’t know when to stop making insulin. The insulin keeps telling the body to absorb the glucose and stores excess energy as fat.

Too much insulin causes the cells in your body to absorb glucose, which can lead to low blood sugar levels. Low blood sugar can trigger you to feel hungry; if you eat more, you’re continuing a vicious cycle.

Insulin Resistance

If you have too much insulin, then your cells build a resistance to it, and your body is triggered to make more. When this continues, your blood sugar levels increase.

Your pancreas will keep trying to regulate your blood sugar levels by producing more insulin. Eventually, your pancreas won’t be able to keep up, and your blood sugar levels will spiral out of control.

How Intermittent Fasting Affects Blood Sugar

Intermittent fasting helps you lose weight by clearing the way for your pancreas to stop storing excess glucose as fat. Then, your body can start burning fat instead.

While fasting, your body stops producing insulin, and your blood sugar begins to stabilize. It usually takes 2-4 weeks for your blood sugar levels to improve.

Signs of Insulin Resistance

Insulin resistance can put you at risk for diabetes, a life-threatening disease. If you’re prediabetic, you might have some of these symptoms:

  • Constant hunger, even when you’ve just eaten,
  • Fatigue,
  • Extreme thirst,
  • Frequent or increased urination,
  • Tingling sensations in your hands and feet,
  • Increased infections and lowered resistance to illness.

Choose The Best Fasting Method for Insulin Resistance

The most common intermittent fasting method for improving insulin resistance is the 16:8 fasting schedule. With this schedule, you have a 16-hour fasting window every day, followed by an 8-hour eating period.

Intermittent fasting can be tricky to manage, and you must stay committed. That’s why a lot of people use fasting apps. Fasting apps let you track your fasting period and are easy to use.

The best fasting apps help you keep track of what you are eating, and they let you track your moods and your energy levels. It’s easier to take control of your diet and eating plan with a fasting app that gives you notifications when your fast is done.

Tips For Starting a Fasting Plan

Your fasting plan is only part of your overall health plan. Be sure to drink plenty of water and exercise regularly. Put a fasting app on your phone to help you keep track of eating and fasting windows.

Choose healthy foods during your eating window, and eat high-fiber and protein-rich foods when you break your fast. Eating heavy meals with a lot of sugar and carbohydrates right after fasting will raise your blood sugar levels quickly.

Talk to your doctor if you are considering a fasting schedule to control your blood sugar, and be prepared to experience some side effects as your body adjusts. If you have symptoms such as nausea and dizziness, you should stop your fast and consult your doctor before proceeding.


  • Does intermittent fasting improve insulin sensitivity?

Intermittent fasting has been shown to improve insulin sensitivity in some studies, but the evidence is mixed, and more research is needed to understand its effects on insulin fully.

  • How does intermittent fasting affect insulin levels?

Intermittent fasting can help regulate insulin levels by reducing insulin resistance and increasing insulin sensitivity.

  • Can intermittent fasting reverse insulin resistance?

Intermittent fasting has been shown to improve insulin resistance, but it is unclear if it can fully reverse the condition.

  • What type of intermittent fasting is best for improving insulin sensitivity?

There is no one-size-fits-all answer to this question, as the best type of intermittent fasting for improving insulin sensitivity may vary depending on the individual.

  • How long does it take for intermittent fasting to improve insulin sensitivity?

The timeline for improvement in insulin sensitivity with intermittent fasting may vary depending on individual factors such as age, weight, and overall health.

  • Is intermittent fasting safe for people with insulin resistance?

Intermittent fasting may be safe for some people with insulin resistance, but it is important to consult with a healthcare provider before starting any new dietary regimen.

  • Can intermittent fasting help with type 2 diabetes?

Intermittent fasting has been shown to improve glucose control and insulin sensitivity in people with type 2 diabetes, but it is important to work with a healthcare provider to manage the condition.

  • What are the potential risks of intermittent fasting for people with insulin resistance?

Some potential risks of intermittent fasting for people with insulin resistance include hypoglycemia, dehydration, and an increased risk of binge eating.

  • Can intermittent fasting be combined with medication for insulin resistance?

Intermittent fasting may be combined with medication for insulin resistance, but it is important to work with a healthcare provider to manage medication dosage and timing.

Andrew Brewer

Andrew Brewer

Andrew Brewer started to give people the guidance that he never received when he was first starting. His goal is to make your goals achievable and to offer you only the best fasting apps that the internet has to offer. You're not on your own - Andrew and the entire family of reviewers at are here with you every step of the way!