The 'NASA' diet that claims it's possible to lose 7 kilos in less than two weeks

The NASA diet is striking both for its name, which evokes astronauts and space science, and for its restrictive nature. Although it has no official relationship with the space agency, it is assumed that astronauts could have the discipline necessary to follow such a demanding plan. The most controversial aspect of this diet is that it promises to lose up to 7 kilos in just 3 weeks, a figure that generates both expectation and controversy.

According to "Mejor con Salud," this is a low-calorie diet that drastically reduces daily food intake, limiting important groups such as carbohydrates, healthy fats, and some micronutrients. Its design is very rigid and short, generally 13 to 21 days, with the goal of achieving rapid weight loss. Each day has specific food combinations, primarily including lean proteins, fruits, and vegetables, while drastically reducing carbohydrates and fats. The regimen stipulates a limited daily calorie intake of between 500 and 700 kcal, which forces the body to use its fat reserves for energy. The diet is highly structured, with fixed menus for each day, and does not allow for flexibility in portions or substitutions, making it very restrictive.

(READ MORE: The 5 South American countries with the highest GDP growth between 2026 and 2030, according to AI )

More disadvantages than successes

According to El Mundo specialists, food restriction accounts for approximately 30% of the average adult's daily energy needs. This extreme caloric restriction can compromise basal metabolism, affecting the proper functioning of cells, tissues, and organs.

In addition to low calorie intake, astronauts' diets are unbalanced and lack variety. By eliminating food groups such as sugars, carbohydrates, and healthy fats, they sacrifice essential nutrients like vitamins, antioxidants, and minerals found in fruits, vegetables, and nuts. This lack of nutritional diversity can lead to deficiencies and negatively impact long-term health.

(READ MORE: Colpensiones: Learn about the 5 mandatory requirements for accessing the solidarity pillar )

Another associated risk is the rebound effect. Rapid initial weight loss can be followed by weight gain after returning to a normal diet, as the body tends to quickly regain the lost weight.

This pattern can lead to frustration and demotivation, as well as potential repercussions on physical and emotional health. Therefore, it is advisable to opt for more balanced and sustainable approaches to weight loss, always under the supervision of health professionals. Better than dieting is eating well.

A varied diet not only provides the nutrients needed to maintain health, but also makes eating more enjoyable and sustainable in the long term, avoiding the boredom or frustration that extreme restrictions often cause. Incorporating fruits, vegetables, whole grains, proteins, and healthy fats in different combinations ensures that the body receives sufficient vitamins, minerals, antioxidants, fiber, and energy. This helps maintain a healthy weight, good physical and mental performance, and strengthens the immune system.

Furthermore, a varied diet allows you to enjoy food without guilt, fostering a positive relationship with food. It's not about eliminating food groups or drastically reducing calories, but rather about choosing nutritious and balanced options.