Intermittent Fasting for Anti-Aging

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

intermittent fasting for anti aging

People have been looking for ways to reverse the aging process for centuries. While there isn’t a fountain of youth, there are methods for turning back the hands of time when it comes to looking and feeling younger.

Intermittent fasting is one of the best ways to slow the aging process. Of course, you can’t completely reverse aging. Still, intermittent fasting, combined with other healthy activities, can slow the degeneration of DNA and accelerate DNA repair, keeping you looking healthier long into your golden years.

Key Takeaways

  • Intermittent fasting can slow down the aging process by reducing the deterioration of DNA, accelerating DNA repair, and promoting cell repair.
  • Intermittent fasting can lead to weight loss, which is associated with longer life expectancy. However, it’s important to achieve weight loss through healthy and sustainable methods.
  • Intermittent fasting can promote the production of human growth hormone (HGH) and activate autophagy, which breaks down old cells and tightens loose skin.
  • Intermittent fasting can upregulate the sirtuin gene, which is an anti-aging gene linked to longevity.
  • Intermittent fasting isn’t suitable for everyone, and it’s important to choose a fasting method that works for your schedule and metabolism. Always consult with a doctor before starting an intermittent fasting plan.

Intermittent Fasting Can Reduce Aging

Intermittent fasting isn’t quite the Fountain of Youth, but it can slow down the aging process, and in some cases, studies have shown that it even reverses the aging process in some people.

The changes in your metabolism triggered by intermittent fasting slow down the deterioration of your DNA and help speed up cell repair. It helps prevent fragility in later years, too.

As life expectancy continues to grow, the quality of life during your golden years is increasingly critical. Intermittent fasting can help people stay mentally agile and reduce the risk of Alzheimer’s.

Lose Weight to Live Longer

One of the most significant benefits of intermittent fasting is weight loss. Losing weight can increase your life expectancy. Even if intermittent fasting had no other benefits, weight loss alone would help you live longer.

Even losing 5 to 10 percent of your weight can increase your life span by several years.

The Effects of Intermittent Fasting on Aging

Fat burning only happens if you are on a keto diet, vigorously exercising, or intermittently fasting. Intermittent fasting encourages your body to burn fat by giving it a break from digesting food.

When you fast for longer than 12 to 16 hours, your body enters ketosis, which is when it has to start burning fat for energy. As your body starts to burn fat, hormone levels change, and anti-aging processes occur.

HGH is Produced During Intermittent Fasting

Your human growth hormone (HGH) levels naturally decline as you age. HGH is required for cell repair, strength, and muscle growth. It also affects your metabolism.

During fasting, your body produces more HGH, increasing energy levels, boosting metabolism, and promoting cell repair.

The Benefits of Autophagy

When you fast intermittently, the body activates autophagy process of breaking down old cells. Autophagy is like housekeeping for your body. During autophagy, your body doesn’t have to concentrate on digesting food and has time to clean out dead and damaged cells.

One of the best benefits of autophagy is that it tightens loose skin and keeps your skin more elastic.

Fasting Activates Gene Expression

The DNA code you were born with never changes, but how your body expresses its DNA can be affected by nutrition and your environment. Everything in your environment can affect how your DNA is expressed.

Your body regulates its genetics by upregulating or downregulating your genes. During intermittent fasting, your body upregulates gene expressions that protect you from diseases like Alzheimer’s and high cholesterol.

Most significantly, the sirtuin gene, the anti-aging gene, gets turned on and upregulated when you fast. Sirtuin proteins have been linked to longevity in studies of mice, increasing their life spans by over 15%.

Is Intermittent Fasting Right For You?

Intermittent fasting isn’t for everyone. Fasting isn’t recommended if you’re pregnant, nursing, or under 18. It can also be difficult for people with fluctuating schedules and individuals with newly diagnosed diseases.

The goal is to choose a method that works for you. People have different schedules and metabolisms, and you might have to experiment with fasting methods to find your preferred technique.

Another reason to avoid intermittent fasting is if you are prone to eating disorders. Always consult with your doctor before you use an intermittent fasting plan.

Reverse Aging with Fasting

Intermittent fasting techniques help your body produce more hormones and promote body functions that delay aging.

While our DNA never changes, environmental factors can affect how our bodies express our DNA. You can use healthy habits like fasting to promote a longer life.

Keeping track of your fasting schedule can be challenging, which is why many people have started using intermittent fasting apps. Fasting apps help you manage your favorite fasting technique to improve your chances of staying on an anti-aging diet.


  • Can intermittent fasting slow down aging?

Studies have shown that intermittent fasting can slow the aging process by reducing oxidative stress, inflammation, and cellular damage.

  • How long should I fast for anti-aging benefits?

The optimal fasting period for anti-aging benefits is unknown, but research suggests that fasting for at least 16 hours per day can be effective.

  • What are the benefits of intermittent fasting for anti-aging?

Intermittent fasting can improve cellular repair mechanisms, reduce inflammation, promote autophagy, and increase the production of human growth hormone (HGH).

  • Is intermittent fasting safe for everyone?

Intermittent fasting is generally safe for most people, but it may not be suitable for pregnant women, people with a history of eating disorders, or certain medical conditions.

  • Can I still exercise while intermittent fasting?

Yes, it is possible to exercise while intermittent fasting, but it is important to stay hydrated and adjust your workouts to accommodate your fasting schedule.

  • What can I eat during my eating window while intermittent fasting?

During your eating window, you should focus on nutrient-dense, whole foods that provide your body with essential vitamins, minerals, and macronutrients.

  • Can intermittent fasting help me lose weight?

Yes, intermittent fasting can help you lose weight by reducing your calorie intake and promoting fat loss.

  • How long does it take to see results from intermittent fasting?

The results of intermittent fasting can vary depending on the individual, but some people may see improvements in their energy levels, mental clarity, and overall health within a few weeks of starting the practice.

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!