If you are unfamiliar with this diet; the 13-day diet is an extremely short-term and strict diet that relies on the individual consuming under 1,000 calories a day, which is an extremely lower than the recommended calorie consumption for adult men and women. According to the National Health Service, the average man requires around 2,500 calories in order to maintain his healthy weight, within a balanced healthy diet. For women, that number is slightly less (2,000). Granted, the number of calories you need to consume will depend on your size and age.
Now that you have the basic background information about the 13-day diet, let’s talk about why this diet plan is not only unhealthy but unsafe. Sarah Flower, who is a renowned nutritionist, told the Sun Online that this diet is “A far cry from healthy.” She mentions that weight loss is more than just losing pounds; it’s about your body being healthy. She adds that when you do a diet like this and then go back to eating normally, the lost weight will be regained.
