Intermittent fasting is not as effective for weight loss in obese or overweight individuals, according to a meta-analysis

The article does not say that intermittent fasting is not effective for weight loss. What it does say is that, based on the studies included so far, there is no evidence that it is superior to classic calorie restriction in terms of weight loss. Most researchers agree on this point and on the need for more clinical trials of longer duration to see if it really offers more benefits than the classic low-calorie diet.

But we do have evidence that it is an alternative for weight loss that is, at a minimum, as effective as classic calorie restriction.

The study is an analysis of clinical trials to date comparing intermittent fasting with the classic diet. There are currently many trials underway and others that have been recently published that have probably not been included.

It is a rigorous review that meets scientific standards for systematic reviews. It suggests that intermittent fasting does not result in greater weight loss than traditional diets. However, the quality of many studies is limited and the follow-up period is short, so it is not the final word.

Intermittent fasting can be useful in many cases; there is scientific evidence to prove this. If intermittent fasting is done correctly, it creates a state of nutritional ketosis that can confer health benefits because ketone bodies have antioxidant and anti-inflammatory properties and are signalling molecules that can modulate epigenetic mechanisms. This state of nutritional ketosis has been observed to be associated with improved well-being and quality of life.

Obesity is a chronic disease that must be addressed in a holistic and multidisciplinary manner. Treatments for overweight/obese individuals must be personalised and tailored to each person; some therapeutic strategies work for some people and others for others, depending on their lifestyle, personal tastes and molecular and physiological profile, and always under the prescription of a nutrition or endocrinology professional.