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Intermittent Fasting: Risks and Benefits Explored with Dr. Jason Fung

Intermittent fasting has become a popular dieting and health-related behavior, with more and more studies showing the potential benefits it can have for individuals looking to lose weight, improve overall health, and reduce their risk of certain chronic diseases.[0] However, the risks associated with intermittent fasting and the potential long-term effects remain largely unknown. As such, it is important to consider the potential risks and benefits before deciding to embark on an intermittent fasting diet.

Jason Fung, a Canadian nephrologist and expert on intermittent fasting, has written extensively on the topic.[1] He argues that intermittent fasting is a powerful tool for weight loss, diabetes prevention, and overall health. According to Fung, intermittent fasting can be beneficial for people who are insulin resistant or pre-diabetic, as well as those who are looking to lose weight or maintain their current weight. Additionally, Fung believes that intermittent fasting can be a helpful tool for those who are interested in improving their overall health and reducing their risk of certain chronic diseases.

The first step to beginning an intermittent fasting diet is to decide what type of fast is best for the individual.[2] Fung suggests that it is important to determine whether one-day fasts or alternate-day fasts are best for the individual. One-day fasts involve fasting for 24 hours, while alternate-day fasts involve fasting for a full 24 hours, followed by a day of eating. Fung also recommends experimenting with different fasting windows to determine the most effective protocol for the individual. When it comes to eating during one's eating window, Fung recommends eating nutrient-dense, low-calorie foods, such as fruits, vegetables, and lean proteins.

However, Fung also warns that there are potential risks associated with intermittent fasting. These include dehydration, electrolyte imbalances, and nutrient deficiencies. Additionally, Fung warns against those who are pregnant, breastfeeding, or under the age of 18 trying intermittent fasting. Finally, it is important to consult with a healthcare provider before beginning an intermittent fasting diet, as it is not suitable for everyone.

Intermittent fasting can be an effective, helpful form of dieting or health-related behavior. However, it is important to consider the potential risks and benefits before deciding to embark on an intermittent fasting diet.

0. “Time-restricted eating ineffective for weight loss” 2 Minute Medicine, 24 Jan. 2023,

1. “Curious about intermittent fasting? Here's what experts say you should know”, 26 Jan. 2023,

2. “The intermittent fasting diet does not appear to work — less calories and more exercise is the way to go | Michael …” NewsBreak Original, 18 Jan. 2023,

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