Comparing 16/8 & 18/6 Intermittent Fasting: Pros & Cons

16/8 vs 18/6 Intermittent Fasting

Fasting has become increasingly popular in recent years, with many people swearing by its weight loss and health benefits. Two popular forms of intermittent fasting are 16/8 and 18/6. In this article, we will discuss the differences between the two, along with the pros and cons of each.

What is 16/8 Intermittent Fasting?

Also referred to as Leangains fasting, 16/8 intermittent fasting involves fasting for 16 hours and having an eight-hour eating window on a daily basis. This type of fasting is the most popular and it is favored by many people due to its flexibility. During the 16-hour fasting period, you are allowed to drink calorie-free beverages such as water, tea, and coffee.

What is 18/6 Intermittent Fasting?

18/6 intermittent fasting is similar to 16/8 fasting, but it involves fasting for 18 hours instead of 16. This type of fasting can be more challenging than 16/8 fasting and is considered a moderate-to-advanced fasting option. While it is more restrictive than 16/8 fasting, it is not as intense as alternate-day fasting or fasting 20-23 hours a day.

Benefits of Intermittent Fasting

Both 16/8 and 18/6 intermittent fasting come with a variety of benefits. For example, they can help you lose weight, improve your digestion, and boost your energy levels. Additionally, intermittent fasting has been linked to increased longevity, better mental clarity, and improved heart health.

16/8 vs 18/6: Which is Better?

When it comes to 16/8 vs 18/6 fasting, it is important to note that the benefits of low insulin levels begin after 13-14 hours of fasting. This means that 18/6 fasting may be better for those looking to maximize their weight loss and health benefits. However, for those who are new to intermittent fasting, 16/8 fasting may be the best option, as it is more flexible and easier to stick to.

Why Choose 18/6 Over 16/8 Fasting?

The main advantage of 18/6 fasting is that it may yield greater results than 16/8 fasting. This is because it is more restrictive and allows for a longer fasting period. Additionally, it may be more beneficial for those who are looking to maximize the benefits of intermittent fasting.

How to Make 18/6 Intermittent Fasting Easier?

The key to making 18/6 fasting easier is to plan ahead and to stick to a routine. It can be helpful to set a fasting window and plan your meals in advance. Additionally, it is important to stay hydrated and to get enough sleep. It can also be helpful to have a buddy who is participating in 18/6 fasting as well, so that you can support each other and stay motivated.


In conclusion, 16/8 and 18/6 intermittent fasting are both popular forms of fasting that offer a variety of health benefits. Although 16/8 is the most popular, 18/6 fasting may provide greater results for those looking to maximize the benefits of intermittent fasting. Both forms of fasting require planning and commitment, but with the right approach, they can be easy to stick to and can have a positive impact on your overall health.

Would 18/6 intermittent fasting be more advantageous than 16/8 intermittent fasting?

Intermittent fasting is more effective when the fasting times are longer, so if your goal is to achieve results quickly, 18/6 intermittent fasting could be the best option compared to 14/10 or 16/8 fasting.

Which is preferable, fasting for 16 hours or 18 hours?

According to Dr. Naiman, the optimal time frame for intermittent fasting is between 18 and 24 hours, since this is when insulin levels drop the most and fat breakdown (lipolysis) increases.

What is the most effective form of intermittent fasting for 18/6?

18/6 intermittent fasting involves abstaining from eating for 18 hours and then eating during the subsequent 6. This particular form of fasting has been linked to weight loss, improved gut health, cognitive advantages, decreased inflammation, and lower insulin resistance.

What is the most successful type of intermittent fasting?

Research has consistently demonstrated that alternate-day fasting is a highly effective form of intermittent fasting, with numerous benefits such as weight loss, improved blood sugar control, and decreased blood pressure (4, 5).

comparing 16 8 18 6 intermittent fasting pros cons 17 04 2023 5

comparing 16 8 18 6 intermittent fasting pros cons 17 04 2023 8

Promote Fasting Books

If you’re interested in learning more about intermittent fasting, check out Fasting Books. They offer a wide range of books about different forms of fasting, including 16/8 and 18/6. Check out their website here.
      Shopping cart