Iodine: how much is needed and why it is added to salt
Iodine is necessary for the thyroid gland to synthesize hormones, and the daily requirement is measured in micrograms—but it is not always easy to obtain from a standard diet.
Every article takes a claim you have already heard about food and follows the mechanism behind it — what actually happens in the body, what the research supports, and where the claim stops being true.
Iodine is necessary for the thyroid gland to synthesize hormones, and the daily requirement is measured in micrograms—but it is not always easy to obtain from a standard diet.
Ferritin is tested more often than any other iron metabolism marker and is most frequently misinterpreted.
The general protein requirement—0.
People usually only know the upper limit for fat.
The difference between plant and animal protein is not that one is "complete" and the other is "incomplete"—it comes down to two specific factors: amino acid profile and digestibility.
Proportions like "30/30/40" look like an optimal formula someone has discovered.
Creatine is the most studied supplement on the shelf, but trials involving women make up a smaller portion of this research.
In Russia, sports nutrition is sold as dietary supplements, and this defines everything else: they are not tested for efficacy, and the composition on the label is a manufacturer's claim, not the result of an analysis.
The word "protein" on packaging is not regulated, but "source of protein" and "high protein" are, and they have specific requirements.
This article is for general information. It is not medical advice, a diagnosis, or a prescription for treatment or a diet, and it does not replace a consultation with your doctor. If you have a health condition, are pregnant, take medication, or follow a diet prescribed to you, decisions about food belong with your doctor.
Figures from regulations, guidelines and studies are given as they stood when this article was prepared and may since have changed; check them against the primary sources. This article is not advertising, an offer, or individual advice, and neither the author nor the site owner is responsible for decisions taken on the basis of it.