The described situation and similar ones do not always end unhappily, nor do they necessarily indicate a bigger problem. While ensuring sufficient intake of any nutrients presents a challenge in terms of values related to RI, it does not mean it is a condition or necessity. Reference intake values are always related to the needs of an averaged population, and it is known that the body can thrive even with lower intake levels of some of them. Calcium is a typical example of such a situation - there is an effort to increase its intake due to concerns about poor bone development (which, of course, can occur not only in adults in relation to the development of osteopenia or osteoporosis but also in young children whose skeletal structures require a certain amount of calcium and protein for proper development), but in reality, the total amount on the plate is not a guarantee of meeting the required dose. The key aspect is the amount of the substance that can be absorbed from the diet into the body, and also the proportion of the total absorbed amount that the body can effectively metabolize plays a role.
In practice, if you know that due to health limitations, you are unable to provide the generally required doses of calcium and you do not want or cannot supplement, you still have the option to adjust your diet to target those factors that influence the absorption of the substance from the intestines and its subsequent metabolism in the body. For calcium, this includes a well-functioning gut microbiota, which (not only through the production of vitamin K2) influences the level of absorption, as well as "monitoring" the correct ratios with other elements (magnesium, phosphorus).
I am of the opinion that a gluten-free diet for healthy individuals does not have a significant impact on health or weight reduction. However, consider this as an entry postulate into the discussion, because it is an indisputable fact that the Western diet has an unattractive excess of gluten-containing grain products, which in some respects leads to increased metabolic burden. In reality, it's not just about gluten, but also the excess of technologically processed carbohydrates with all the known health implications. As soon as an individual in this situation starts to address a change in their diet and opts for a gluten-free approach, it very often (though this is not a requirement) leads to the choice of gluten-free alternatives with higher quality grains (lower GI, higher fiber and micronutrient content, easier digestibility, less presence of additives...) and simultaneously a reduction in their volume in the diet. These (at first glance not essential) changes can have a significant impact on the individual in many cases, which then gives the impression that gluten is the culprit for all that is wrong in nutrition.
Questions answered by
Mgr. Martin Jelinek
Lecturer and author of the educational system
Nutrition educator, lecturer, and author of the educational system and the ZOF learning application.
Mgr. Martin Jelínek has been systematically involved in nutrition education since 1999. He is the founder of ATAC, the educational company behind NutriCourses, and the author of an educational system focused on nutrition, healthy lifestyle, and the practical application of nutrition knowledge.
He graduated from the Faculty of Science at Masaryk University in Brno. Throughout his professional career, he has combined nutrition, education, and the practical application of acquired knowledge. His educational system also includes the ZOF (Zone of Optimal Functioning) learning application, where students turn theory into practical work with meal plans.
In 2007, he launched the first intake of a six-month course focused on the education of nutrition advisors. Over time, this course became the foundation for the further development of the educational system and a range of specialised courses.