Rythmonutrition®: health benefits at the rhythm of our bodies

In our western societies, we are exposed to an overwhelming variety of foods that are full of calories and to the industrialization of nutrition, which inevitably leads to diminished levels and quality for proteins, minerals, vitamins and other essential elements for the body.

Given this situation, it is urgently required to re-establish a proper nutritional balance. To do this, in 2007 YSONUT Laboratories’ Research and Development Department, in collaboration with several internationally recognized universities, created a new, scientifically proven nutritional concept: Rythmonutrition.


Rythmonutrition consists of applying the principles of chronobiology, the branch of biology that studies the rhythms to which living beings are subject, to the field of nutrition.

This incredibly simple notion has far-reaching implications.



As we have said, chronobiology is the science which studies the working of the biological rhythms which govern living beings.

These rhythms are controlled by the so-called “biological clocks” that we have, for example, in our cerebral cortex, and which regulate our metabolism, influencing the various systems (neurological, psychological, hormonal and energetic) that make up the human body. In humans, these biological clocks are calibrated at approximately 24 hours (the circadian rhythm) and are readjusted each day by external synchronisers (alternations between day/night, work/rest, social life, etc.).

It is important to understand that all the processes in our bodies are regulated by these biological clocks. For example, the production of neuromediators (which regulate things as important as mental energy or sleep) or of hormones such as insulin (which defends against diabetes) is subject to regular oscillations throughout the day.

Though it may come as a surprise, our cells are aware of what time of day it is. The daily activity of cells is broken into two phases:

  • From 5 AM to 5 PM: they generate the energy required for our various activities over the course of the day.
  • From 5 PM to 5 AM: they are mainly busy repairing and regenerating to be ready for the following day.

What do these concepts from chronobiology have to do with nutrition?


Nutritional chronobiology consists of creating nutritional guidelines based on all these data concerning the rhythms that regulate the functioning of our bodies.

  • Foods must be ingested at the point in our daily rhythms that allows for maximum efficiency.
  • It’s important to obey a rhythm of 4 daily meals with fixed times to avoid eating disorders and bad habits (feeling of hunger, snacking, extra meals, etc.)
  • It is also necessary to pay attention to interactions between nutrients to optimise their absorption (iron and calcium, iron and vitamin C, etc.)

The example of fatty acids is very clear:

  • Saturated fatty acids must be ingested in the morning to meet the day’s energy needs.
  • Polyunsaturated Omega 3 fatty acids must be ingested at night due to their role in reconstructing cell membranes.


Previously we mentioned neuromediators. What role do they play in nutrition?

As has already been mentioned, neuromediators (such as dopamine, noradrenalin, serotonin or melatonin) play a crucial role in the regulation of many of our body’s parameters such as mood, wellbeing, eating habits, sleep, etc.

These chemical transmitters require a supply of precursors (tryptophan and tyrosine, which facilitate synthesis), and obey a precise biological rhythm:

  • In the morning and at midday, it is necessary to absorb tyrosine, which facilitates the synthesis of dopamine and noradrenalin. These two catecholamines favour physical and mental activity, high levels of motivation and the ability to react to recurring stress.
  • During the afternoon and at night, it is necessary to intake tryptophan, which facilitates the synthesis of serotonin and melatonin. These two indoleamines favour serenity, relaxation, tolerance of frustration, a decrease in compulsive tendencies, preparation for sleep, etc.

YSONUT Laboratories has created a series of dietary supplements that provide the necessary precursors for the production of neuromediators and which, taken in combination with a high protein diet, optimise the diet’s efficacy:

  • DYNOVANCE provides tyrosine for the production of catecholamines in the morning.
  • SEROVANCE provides tryptophan for the production of indoleamines in the evening.


The Protéifine® high protein diet basically consists of making a drastic reduction in the sugars and fats ingested while at the same time guaranteeing an adequate supply of proteins, thereby avoiding degradation of lean mass (skin, muscles, bones).

Driven by its vocation for Research and Development, YSONUT Laboratories has perfected this high protein diet in accordance with the precepts of chronobiology. Specifically, the new RYTHMONUTRITION Protéifine® formula presents the following improvements:

  • Adaptation of eating rhythms and the stages of the Protéifine® diet to biological rhythms.
  • Integration of micronutritional supplements which are essential for balancing the body in line with biological rhythms (vitamins and calcium in the morning, iron in the afternoon, Omega 3 at night, etc.).
  • Prescription of neuromediators starting in the first phases of the diet (including Dynovance® and Sérovance®, both rich in neuromediator precursors), which helps prevent the frustrations and food compulsions that are so common during nutritional re-education.

Thanks to its integration in the various YSONUT Laboratories products, Rythmonutrition® will help you:

  • Re-synchronise your altered biological rhythms (unbalanced nutrition, stress, growth, sport, aging, various pathologies, jet lag, desk work, etc.).
  • Easily stay on the diet plan.
  • Maintain your new weight in the long term.
  • And rediscover physical and mental harmony.