Viral Diet Switch-On in Korea, Claiming to Lose 4 Kg in Less than a Week

Illustration of a slim woman (Photo: Pexels/Karola G)

JAKARTA - The South Korean diet called Switch-On Diet is being widely discussed. This method caught the attention after a model living in Seoul claimed to have lost weight up to 4 kilograms in less than a week.

As reported by the Economic Times website on Saturday, January 3, 2026, Sherrie, a model from Seoul, shared her experience through social media in March 2025. Although the results are significant, Sherrie insists that she is not a health worker and does not intend to invite others to imitate her.

Sherrie reminded that her experience should not be swallowed whole and should be approached very carefully, even if it should be considered only a personal experience, not a mandatory guide to follow.

According to Sherrie, the results were obtained after undergoing the Switch-On Diet, a four-week diet program developed by South Korean doctors. Citing a report from The New York Times, this diet was designed by obesity researcher Dr. Park Yong-Woo.

The Switch-On Diet aims to reactivate the body's metabolism so that it can more effectively burn fat. This eating pattern focuses on high protein and fiber intake, as well as limiting the consumption of sugar, alcohol, caffeine, processed meat, and overly processed foods.

In the initial stage, this diet emphasizes detoxification and digestive recovery. Food intake is very limited and dominated by protein. Over time, the diet is combined with intermittent fasting to train the body to burn fat as the main source of energy.

The menu that is allowed includes lean chicken, fish, eggs, nuts, vegetables, certain fruits, and complex carbohydrates in limited amounts. Sugar and alcohol are still prohibited.

Although it is claimed to be able to reduce fat in a short time, experts warn that this diet is considered strict. Citing a report from the New York Post, an intense fasting pattern and extreme food restrictions are not suitable for everyone, especially without medical supervision.

Rapid weight loss is also often caused by a decrease in body fluids, not just fat. Therefore, the public is advised to consider their own health conditions before trying this diet.

Illustration of a slim woman (Photo: Pexels/Karola G)