Knowledge · Nutrition
Vitamin D: Bones, Testing, Supplements, and the Risks of Megadoses
Evidence-based guide to vitamin D: cholecalciferol metabolism, calcium homeostasis, immune function, 25(OH)D blood testing, dosages, and toxicity risks.
Knowledge · Supplements
Selenium in the Body: Why It Is Needed, Where It Comes From, and Why Excess Can Be Dangerous
Selenium: thyroid function, tests and safety — практическое руководство по источникам, дефициту, добавкам и рискам.
Knowledge · Supplements
Iodine in the Body: Why It Matters, How to Recognize Deficiency, and Why Excess Can Be Dangerous
A practical guide to iodine in T4 and T3 synthesis, food sources, deficiency and excess, thyroid testing and safe supplement decisions.
Knowledge · Supplements
Vitamin B12: role, testing, food sources and safe correction
A practical guide to cobalamin: why it matters for nerves and blood formation, which tests help assess status, who needs monitoring, and how to avoid confusing deficiency with other causes of symptoms.
Knowledge · Labs and diagnostics
Lab results in NutriFit
Lab reports can be uploaded as PDF, photo or scan: the system recognises markers, flags deviations and highlights what deserves attention. Over time you get biomarker dynamics alongside nutrition, activity and supplement intake.