beta

How it works For specialists Knowledge Blog FAQ

Product

Knowledge base Blog Recipes Our pricing NutriFit calculators MCP Server

Documents

Privacy policy User agreement Public offer

Help

© 2026 NutriFit. All rights reserved.V1.0.2365 · 2025–2026

All materials

Categories Courses

Nutrition Supplements Biohacking Mental health

Material type

All materials Knowledge News

Area

Nutrition Supplements Biohacking Mental health Labs and diagnostics Sleep General

Popular tags

#митохондрии

#supplement-safety

#витамин B6

#витамин D

#гемоглобин

#нейропатия

#фармакокинетика

#микробиота

#Для специалистов

#эндотелий

#иммунитет

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.

September 2, 2026

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.

September 2, 2026

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.

September 1, 2026