The Unknowns Of Intermittent Fasting To Lose Weight, The Latest

The unknowns of intermittent fasting to lose weight, the latest fashionable ‘diet’ in Spain

Intermittent fasting has become fashionable as an alternative to traditional diets, but studies are still lacking to prove its effectiveness.

Intermittent fasting has become fashionable as a successful formula for weight loss.

Intermittent fasting is one of the latest strategies to lose weight that have become fashionable in Spain. Contrary to diets that consist of reducing calories consumed per day, it is a controlled and time-limited abstinence. That is, those who do intermittent fasting do not eat food for a period of time that lasts at least 12 hours, although it is variable.

During the phase in which food is eaten, a healthy diet is recommended, although is not the main objective of this strategy. People who follow this type of diet can drink unsweetened liquids throughout the day. As explained by the Organization of Consumers and Users (OCU), there are still studies to confirm the benefits of intermittent fasting on metabolism.

The agency explains that the latest research has not found certainties about the effects of intermittent fasting on mortality, myocardial infarction and heart failure. Intermittent fasting could be effective for weight loss compared to unrestricted eating and could be as effective as continuous energy restriction, but there are still several unknowns.


Some of the questions that are still to be clarified about intermittent fasting would be, for example, determine which variety is most effective and under what conditions, which patients might benefit and which might not—for example, people with diabetes or eating disorders—and what long-term consequences it may have on metabolic or cardiovascular health, or even cognitive performance.

Although the mechanism by which intermittent fasting helps reduce body weight is not fully understood, research suggests that it occurs through three pathways. The first is the majority use of fat from adipose tissue for energy production by the body, which in the long term can reduce cardiovascular risk; the second, nutritional stress during fasting and, finally, circadian cycles.

Intermittent fasting has not yet been shown to reduce more body weight than a conventional calorie-reduced diet. In addition, cases of long periods of continuous fasting (between 5 and 7 weeks) have been observed in which organs and muscles are consumed for energy by starvation. This strategy, therefore, can be counterproductive if practiced too often.

a supervised process

The starvation state is characterized by excessive weight loss, anemia, chronic diarrhea, or delirium. But nevertheless, when intermittent fasting is prescribed as therapy by a professional it does not present these side effects. If carried out for many days in a row, headaches, fainting, weakness, lightheadedness, feeling cold, mood swings and, in extreme cases, changes in eating behavior may be experienced.

For this reason, if you’re thinking of using intermittent fasting for weight loss, it’s best to seek advice from a nutrition professional. This strategy should not be understood as simply stopping eating for a certain period of hours, but rather it must be a supervised process to obtain results without compromising health.