Intermittent Fasting: A Modern Approach to Health and Longevity


In an era where health consciousness is on the rise, intermittent fasting (IF) has emerged as a popular and potentially effective dietary approach. Distinct from traditional diet plans, IF focuses not just on what you eat, but also on when you eat. This article explores the concept of intermittent fasting, particularly time-restricted feeding, delving into the insights provided by experts like Dr. Jason Fung and Andrew Huberman. We’ll examine the latest research to offer a comprehensive understanding of this health trend.

The Basics of Intermittent Fasting

Intermittent fasting involves cycling between periods of eating and fasting. Unlike diets that restrict calories or certain types of food, IF focuses on the timing of meals. The idea is to eat during a specific time window each day or week. This method is believed to trigger a variety of physiological changes beneficial to health.

Time-Restricted Feeding: An Overview

Time-restricted feeding (TRF) is a type of IF where individuals consume all their meals within a particular timeframe, typically 8-10 hours, followed by a fasting period of 14-16 hours. This pattern aligns closely with the body’s natural circadian rhythms, potentially enhancing its effectiveness.

Dr. Jason Fung’s Perspective on Fasting

Dr Jason Fung, a renowned proponent of IF, emphasises the importance of varying fasting durations to prevent the body from adapting to a set routine. He suggests that the frequency and duration of fasts should be tailored to individual health goals and responses​​. Fung also highlights that while IF is generally safe, those with certain medical conditions, like low blood pressure, should consult their doctor before starting a fasting regimen​​.

Andrew Huberman’s Insights on IF

Stanford’s Andrew Huberman describes IF as an efficient fat-loss technique. He notes that fasting lowers insulin and blood sugar levels while increasing metabolism-promoting hormones, thereby enhancing fat metabolism​​. Huberman also mentions various IF methods, including 16-hour daily fasts, alternate-day fasting, and eating very few calories every other day, all of which can be tailored to individual preferences​​.

Health Benefits of Intermittent Fasting

  1. Weight Management: IF, especially time-restricted feeding, is linked to reduced body weight and fat. Studies show that IF can be as effective as continuous calorie restriction for weight loss​​.
  2. Metabolic Health: IF can improve various metabolic markers, including blood sugar levels, blood pressure, and cholesterol​​.
  3. Improved Circadian Rhythm: Eating in alignment with the body’s natural clock can lead to better sleep and overall health​​.

Choosing the Right Fasting Method

The choice of an IF method depends on individual lifestyle, health goals, and personal preferences. Some may prefer shorter daily fasts, while others might find alternate-day fasting more suitable. It’s essential to start gradually and listen to your body’s signals.

Precautions and Considerations

While IF offers numerous benefits, it’s not suitable for everyone. People with certain medical conditions, pregnant women, and those with a history of eating disorders should seek medical advice before trying IF. Staying hydrated and maintaining a balanced diet during eating periods is crucial.


Intermittent fasting, particularly time-restricted feeding, offers a promising approach to weight management and metabolic health. By aligning eating patterns with the body’s natural rhythms, IF can be a sustainable and effective dietary strategy. However, it’s essential to tailor the approach to individual needs and seek professional advice when necessary.


  1. Dr. Jason Fung’s Perspective on Fasting.
  2. Andrew Huberman’s Research on Intermittent Fasting.
  3. Current Research on Intermittent Fasting and Time-restricted Feeding.