Food supplements are everywhere: in pharmacies, supermarkets, and online. But between marketing promises and reality, it's not always easy to know what they're really for. At Kyel, we believe that a well-informed consumer makes better choices. So here's the essential, factual, and unexaggerated truth.
What is a food supplement?
A food supplement is a concentrated source of nutrients (vitamins, minerals) or other substances (plants, amino acids, fatty acids, etc.) intended to supplement the diet. In France, they are not medicines: they are not used to treat a disease, but to supplement intake. Their market release is regulated and subject to a declaration to the DGCCRF.
What they can and cannot do
The most important point, highlighted by ANSES: food supplements do not replace a varied and balanced diet. They supplement it when it is not enough to cover certain needs. No supplement "repairs" a poor lifestyle, and none replaces medical treatment.
However, in specific situations, they fill real and well-documented gaps. This is where they become truly meaningful.
When are they really useful?
Several situations are clearly established:
- Pregnancy. Health authorities recommend folate (vitamin B9) supplementation, around 400 µg per day before and at the beginning of pregnancy, to reduce the risk of neural tube defects in the fetus.
- Vegetarian and vegan diets. Vitamin B12 is found almost exclusively in animal products: ANSES recommends supplementation for vegans to prevent deficiency.
- Vitamin D. A deficiency affects a large part of the French population, especially in winter and among the elderly, which often justifies supplementation.
- Omega-3s. When the diet provides little (few oily fish), supplementation can help reach targets: ANSES estimates the need at around 500 mg of EPA + DHA per day.
- Certain profiles or periods. Confirmed iron or magnesium deficiency, elderly people, athletes with increased needs… provided, again, there is a real need.
The common thread is simple: a supplement is useful when it addresses an identified need, not "just in case."
Why regularity changes everything
A nutrient does not act like a medicine with an immediate effect. For an intake to truly manifest in the body, it generally needs to be maintained regularly, over several weeks. This is the entire logic of a course of treatment: daily and consistent intake, rather than occasional intake. Taking a supplement from time to time has little benefit; consistency, however, does.
Choosing and taking them safely
"Natural" does not mean "risk-free." Overdosing or an inappropriate combination can lead to adverse effects; ANSES cites, for example, excessive caffeine, which is problematic for the heart. Some simple guidelines:
- Respect the indicated doses, without combining them from multiple products.
- Seek advice from a healthcare professional (doctor, pharmacist, dietitian), especially in case of treatment, pregnancy, or for a child. ANSES strongly recommends this.
- Start with your real needs, ideally after an assessment, rather than accumulating products.
- Check the composition: origin of ingredients, clearly displayed dosages, absence of unnecessary additives.
Our approach at Kyel
This is the requirement that guides Kyel: a formula based on plants, minerals, and amino acids, dosages displayed with full transparency, and a 30-day course format designed for regularity. Our conviction: transparency and proper use are better than promises. Discover our approach and our courses.
This article is for informational purposes only and does not replace the advice of a healthcare professional.