# NutriFit

> A reliable knowledge base on nutrition, supplements, biohacking, fitness, and health. Materials are structured with source references.

## Knowledge
- [Taurine: nerves, haemoglobin and safety](https://nutrifit.health/knowledge/green-tea-taurine-polyphenols-safety/md): Роль Таурина в обмене, нервной системе и образовании гемоглобина, признаки дефицита, анализы и риск нейропатии при высоких дозах.
- [Betaine: nerves, haemoglobin and safety](https://nutrifit.health/knowledge/green-tea-betaine-polyphenols-safety/md): Роль Бетаина в обмене, нервной системе и образовании гемоглобина, признаки дефицита, анализы и риск нейропатии при высоких дозах.
- [L-arginine: nerves, haemoglobin and safety](https://nutrifit.health/knowledge/green-tea-l-arginine-polyphenols-safety/md): Роль L-аргинина в обмене, нервной системе и образовании гемоглобина, признаки дефицита, анализы и риск нейропатии при высоких дозах.
- [L-citrulline: nerves, haemoglobin and safety](https://nutrifit.health/knowledge/green-tea-l-citrulline-polyphenols-safety/md): Роль L-цитруллина в обмене, нервной системе и образовании гемоглобина, признаки дефицита, анализы и риск нейропатии при высоких дозах.
- [Beta-alanine: nerves, haemoglobin and safety](https://nutrifit.health/knowledge/green-tea-beta-alanine-polyphenols-safety/md): Роль Бета-аланина в обмене, нервной системе и образовании гемоглобина, признаки дефицита, анализы и риск нейропатии при высоких дозах.
- [L-carnitine: nerves, haemoglobin and safety](https://nutrifit.health/knowledge/green-tea-l-carnitine-polyphenols-safety/md): Роль L-карнитина в обмене, нервной системе и образовании гемоглобина, признаки дефицита, анализы и риск нейропатии при высоких дозах.
- [Glutamine: nerves, haemoglobin and safety](https://nutrifit.health/knowledge/green-tea-glutamine-polyphenols-safety/md): Роль глутамина в обмене, нервной системе и образовании гемоглобина, признаки дефицита, анализы и риск нейропатии при высоких дозах.
- [Coenzyme Q10: nerves, haemoglobin and safety](https://nutrifit.health/knowledge/green-tea-coenzyme-q10-polyphenols-safety/md): Роль коэнзима Q10 в обмене, нервной системе и образовании гемоглобина, признаки дефицита, анализы и риск нейропатии при высоких дозах.
- [Psyllium and soluble fiber: nerves, haemoglobin and safety](https://nutrifit.health/knowledge/green-tea-psyllium-polyphenols-safety/md): Роль псиллиума в обмене, нервной системе и образовании гемоглобина, признаки дефицита, анализы и риск нейропатии при высоких дозах.
- [Cocoa flavanols: nerves, haemoglobin and safety](https://nutrifit.health/knowledge/green-tea-cocoa-flavanols-polyphenols-safety/md): Роль какао-флаванолов в обмене, нервной системе и образовании гемоглобина, признаки дефицита, анализы и риск нейропатии при высоких дозах.
- [Garlic and allicin: nerves, haemoglobin and safety](https://nutrifit.health/knowledge/green-tea-garlic-polyphenols-safety/md): Роль чеснока в обмене, нервной системе и образовании гемоглобина, признаки дефицита, анализы и риск нейропатии при высоких дозах.
- [Ginger and extracts: nerves, haemoglobin and safety](https://nutrifit.health/knowledge/green-tea-ginger-polyphenols-safety/md): Роль имбиря в обмене, нервной системе и образовании гемоглобина, признаки дефицита, анализы и риск нейропатии при высоких дозах.
- [Curcumin and turmeric: nerves, haemoglobin and safety](https://nutrifit.health/knowledge/green-tea-curcumin-polyphenols-safety/md): Роль куркумина в обмене, нервной системе и образовании гемоглобина, признаки дефицита, анализы и риск нейропатии при высоких дозах.
- [Green tea: nerves, haemoglobin and safety](https://nutrifit.health/knowledge/green-tea-green-tea-polyphenols-safety/md): Роль зелёного чая в обмене, нервной системе и образовании гемоглобина, признаки дефицита, анализы и риск нейропатии при высоких дозах.
- [Caffeine: nerves, haemoglobin and safety](https://nutrifit.health/knowledge/caffeine-sleep-performance-safety/md): Роль кофеина в обмене, нервной системе и образовании гемоглобина, признаки дефицита, анализы и риск нейропатии при высоких дозах.
- [Fermented foods: nerves, haemoglobin and safety](https://nutrifit.health/knowledge/fermented-foods-microbiome-safety/md): Роль ферментированных продуктов в обмене, нервной системе и образовании гемоглобина, признаки дефицита, анализы и риск нейропатии при высоких дозах.
- [Polyphenols: nerves, haemoglobin and safety](https://nutrifit.health/knowledge/polyphenols-food-antioxidants-safety/md): Роль полифенолов в обмене, нервной системе и образовании гемоглобина, признаки дефицита, анализы и риск нейропатии при высоких дозах.
- [Resistant starch: nerves, haemoglobin and safety](https://nutrifit.health/knowledge/resistant-starch-fermentation-gut-health/md): Роль устойчивого крахмала в обмене, нервной системе и образовании гемоглобина, признаки дефицита, анализы и риск нейропатии при высоких дозах.
- [Glycemic index: nerves, haemoglobin and safety](https://nutrifit.health/knowledge/glycemic-index-load-meal-planning/md): Роль гликемического индекса в обмене, нервной системе и образовании гемоглобина, признаки дефицита, анализы и риск нейропатии при высоких дозах.
- [Sodium and salt: nerves, haemoglobin and safety](https://nutrifit.health/knowledge/sodium-salt-blood-pressure-safety/md): Роль натрия и соли в обмене, нервной системе и образовании гемоглобина, признаки дефицита, анализы и риск нейропатии при высоких дозах.
- [Added sugars: nerves, haemoglobin and safety](https://nutrifit.health/knowledge/added-sugars-glycemic-load-metabolic-health/md): Роль сахаров в обмене, нервной системе и образовании гемоглобина, признаки дефицита, анализы и риск нейропатии при высоких дозах.
- [Dietary fats: nerves, haemoglobin and safety](https://nutrifit.health/knowledge/dietary-fats-omega6-balance-safety/md): Роль жиров в обмене, нервной системе и образовании гемоглобина, признаки дефицита, анализы и риск нейропатии при высоких дозах.
- [Protein: nerves, haemoglobin and safety](https://nutrifit.health/knowledge/protein-intake-muscle-safety/md): Роль белка в обмене, нервной системе и образовании гемоглобина, признаки дефицита, анализы и риск нейропатии при высоких дозах.
- [Collagen: nerves, haemoglobin and safety](https://nutrifit.health/knowledge/collagen-connective-tissue-safety/md): Роль коллагена в обмене, нервной системе и образовании гемоглобина, признаки дефицита, анализы и риск нейропатии при высоких дозах.
- [Creatine: nerves, haemoglobin and safety](https://nutrifit.health/knowledge/creatine-performance-kidney-safety/md): Роль креатина в обмене, нервной системе и образовании гемоглобина, признаки дефицита, анализы и риск нейропатии при высоких дозах.
- [Electrolytes: nerves, haemoglobin and safety](https://nutrifit.health/knowledge/electrolytes-hydration-sodium-potassium-safety/md): Роль электролитов в обмене, нервной системе и образовании гемоглобина, признаки дефицита, анализы и риск нейропатии при высоких дозах.
- [Dietary fiber: nerves, haemoglobin and safety](https://nutrifit.health/knowledge/dietary-fiber-prebiotics-gut-health-safety/md): Роль пищевых волокон в обмене, нервной системе и образовании гемоглобина, признаки дефицита, анализы и риск нейропатии при высоких дозах.
- [Probiotics: nerves, haemoglobin and safety](https://nutrifit.health/knowledge/probiotics-gut-microbiome-safety/md): Роль пробиотиков в обмене, нервной системе и образовании гемоглобина, признаки дефицита, анализы и риск нейропатии при высоких дозах.
- [Omega-3: nerves, haemoglobin and safety](https://nutrifit.health/knowledge/omega-3-epa-dha-triglycerides-safety/md): Роль омега-3 в обмене, нервной системе и образовании гемоглобина, признаки дефицита, анализы и риск нейропатии при высоких дозах.
- [Vitamin E: nerves, haemoglobin and safety](https://nutrifit.health/knowledge/vitamin-e-antioxidant-skin-safety/md): Роль витамина E в обмене, нервной системе и образовании гемоглобина, признаки дефицита, анализы и риск нейропатии при высоких дозах.
- [Vitamin D: nerves, haemoglobin and safety](https://nutrifit.health/knowledge/vitamin-d-bone-immunity-tests-safety/md): Роль витамина D в обмене, нервной системе и образовании гемоглобина, признаки дефицита, анализы и риск нейропатии при высоких дозах.
- [Choline: nerves, haemoglobin and safety](https://nutrifit.health/knowledge/choline-liver-neurotransmitter-safety/md): Роль холина в обмене, нервной системе и образовании гемоглобина, признаки дефицита, анализы и риск нейропатии при высоких дозах.
- [Vitamin B8: nerves, haemoglobin and safety](https://nutrifit.health/knowledge/vitamin-b8-inositol-cell-signaling-safety/md): Роль витамина B8 в обмене, нервной системе и образовании гемоглобина, признаки дефицита, анализы и риск нейропатии при высоких дозах.
- [Vitamin B7: nerves, haemoglobin and safety](https://nutrifit.health/knowledge/vitamin-b7-biotin-hair-tests-safety/md): Роль витамина B7 в обмене, нервной системе и образовании гемоглобина, признаки дефицита, анализы и риск нейропатии при высоких дозах.
- [Vitamin B5: nerves, haemoglobin and safety](https://nutrifit.health/knowledge/vitamin-b5-pantothenic-acid-metabolism-safety/md): Роль витамина B5 в обмене, нервной системе и образовании гемоглобина, признаки дефицита, анализы и риск нейропатии при высоких дозах.
- [Vitamin B3: nerves, haemoglobin and safety](https://nutrifit.health/knowledge/vitamin-b3-niacin-lipids-safety/md): Роль витамина B3 в обмене, нервной системе и образовании гемоглобина, признаки дефицита, анализы и риск нейропатии при высоких дозах.
- [Vitamin B2: nerves, haemoglobin and safety](https://nutrifit.health/knowledge/vitamin-b2-riboflavin-energy-safety/md): Роль витамина B2 в обмене, нервной системе и образовании гемоглобина, признаки дефицита, анализы и риск нейропатии при высоких дозах.
- [Vitamin B1: nerves, haemoglobin and safety](https://nutrifit.health/knowledge/vitamin-b1-energy-nervous-system-safety/md): Роль витамина B1 в обмене, нервной системе и образовании гемоглобина, признаки дефицита, анализы и риск нейропатии при высоких дозах.
- [Vitamin B6: nerves, haemoglobin and safety](https://nutrifit.health/knowledge/vitamin-b6-neurotransmitters-hemoglobin-safety/md): Vitamin B6 supports amino-acid metabolism, neurotransmitters and haemoglobin; high-dose safety matters. This article explains food sources, deficiency risk, testing, interactions and neuropathy prevention.
- [Vitamin C: collagen, iron and safety](https://nutrifit.health/knowledge/vitamin-c-collagen-iron-supplement-safety/md): Практическое руководство по источникам витамина C, дозировкам, анализам и рискам добавок.
- [Vitamin K: clotting, bones and interactions](https://nutrifit.health/knowledge/vitamin-k-coagulation-bone-health-interactions/md): Практическое руководство по формам витамина K, питанию, анализам и лекарственной безопасности.
- [Vitamin A: vision, immunity and safe intake](https://nutrifit.health/knowledge/vitamin-a-vision-immunity-safe-intake/md): A practical guide to retinol and carotenoids, food sources, deficiency clues, testing, pregnancy precautions and overdose risk.
- [Selenium in the Body: Why It Is Needed, Where It Comes From, and Why Excess Can Be Dangerous](https://nutrifit.health/knowledge/selenium-thyroid-antioxidant-function-tests/md): Selenium: thyroid function, tests and safety — практическое руководство по источникам, дефициту, добавкам и рискам.
- [Iodine in the Body: Why It Matters, How to Recognize Deficiency, and Why Excess Can Be Dangerous](https://nutrifit.health/knowledge/iodine-thyroid-hormones-tests-safe-intake/md): A practical guide to iodine in T4 and T3 synthesis, food sources, deficiency and excess, thyroid testing and safe supplement decisions.
- [Zinc in the Body: Why It Matters, How to Recognize Deficiency, and Why Excess Can Be Dangerous](https://nutrifit.health/knowledge/zinc-immune-function-deficiency-safe-supplementation/md): A practical guide to zinc: its roles in immunity, skin and reproduction, causes of deficiency or excess, food sources, testing and interactions with copper and medicines.
- [Calcium in the Body: Why It Matters, How to Recognize Deficiency and Excess, and How to Choose Supplements Safely](https://nutrifit.health/knowledge/calcium-bone-metabolism-tests-safe-intake/md): A practical guide to calcium: its roles in bone and neuromuscular function, links with vitamin D and parathyroid hormone, food, testing and supplement safety.
- [Magnesium in the Body: Why It Matters, How to Recognize Deficiency, and How to Choose a Supplement Safely](https://nutrifit.health/knowledge/magnesium-functions-food-tests-safe-supplementation/md): A practical guide to magnesium: its roles in muscles and nerves, food sources, deficiency risks, testing and limits of self-directed supplements.
- [Iron and ferritin: deficiency, testing, food and safety](https://nutrifit.health/knowledge/iron-status-ferritin-deficiency-safe-correction/md): A practical guide to iron balance: the roles of haemoglobin and ferritin, causes of deficiency or overload, useful tests, diet and safe correction.
- [Folate (vitamin B9): functions, food, testing and pregnancy](https://nutrifit.health/knowledge/folate-vitamin-b9-functions-testing-pregnancy/md): A practical guide to folate: its role in cell division and blood formation, food folate versus folic acid, status assessment, neural-tube prevention and safe correction.
- [Vitamin B12: role, testing, food sources and safe correction](https://nutrifit.health/knowledge/vitamin-b12-role-tests-sources/md): 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.
- [The NutriFit partner programme](https://nutrifit.health/knowledge/partnerskaya-programma-nutrifit/md): The NutriFit partner programme pays across three levels: 20% of the client Premium subscription at level one, 12% at level two and 8% at level three. The minimum payout is 50 USDT and partner status grows with the number of connected clients.
- [Marathons and challenges in NutriFit](https://nutrifit.health/knowledge/marafony-i-chellendzhi-nutrifit/md): Marathons and challenges add group dynamics to a personal programme: a shared goal, a community and leaderboards. They keep clients engaged longer and let specialists raise engagement without micromanaging every step.
- [Plan 90: a discipline tool for specialists](https://nutrifit.health/knowledge/plan-90-nutrifit/md): Plan 90 is a dedicated specialist tool that sets a 90-day working rhythm and collects statistics on actions, conversions and results, showing which activities actually bring clients and grow the practice.
- [Artificial intelligence in NutriFit](https://nutrifit.health/knowledge/ai-pomoshnik-nutrifit/md): AI in NutriFit assists the specialist rather than replacing them. It reviews what the client logs, helps spot patterns and revises recommendations as new data arrives, while final decisions and responsibility stay with the consultant.
- [Requests between client and consultant](https://nutrifit.health/knowledge/zayavki-klient-konsultant-nutrifit/md): Requests in NutriFit are bidirectional: a client can ask for a product or guidance, and a consultant can offer one. Every request follows an explicit status sequence, so agreements are never lost in chat.
- [Working with a consultant in NutriFit](https://nutrifit.health/knowledge/rabota-s-konsultantom-nutrifit/md): In NutriFit the client gets a single digital profile and the specialist gets a single workspace. The consultant prescribes nutrition, supplements, lab tests and training, sees adherence and talks to the client in the same guidance flow.
- [Reminders and notifications in NutriFit](https://nutrifit.health/knowledge/napominaniya-i-uvedomleniya-nutrifit/md): NutriFit reminds clients about supplement intake, weigh-ins, body measurements and repeat lab tests through in-app push notifications and Telegram messages, removing routine manual follow-ups from the specialist.
- [Charts and progress analytics in NutriFit](https://nutrifit.health/knowledge/grafiki-i-analitika-nutrifit/md): NutriFit turns complex data into simple cards and charts: dynamics by period and parameter, what is actually changing and what has stalled. Analytics turns specialist recommendations into arguments backed by numbers.
- [Body measurements and progress dynamics](https://nutrifit.health/knowledge/zamery-tela-i-dinamika-nutrifit/md): Weight, body fat percentage and waist and hip circumference form an objective picture of body change. NutriFit stores measurement history, reminds about weigh-ins and shows dynamics next to nutrition and activity.
- [Supplements and intake control in NutriFit](https://nutrifit.health/knowledge/biodobavki-i-kontrol-priema-nutrifit/md): The specialist prescribes a schedule for vitamins, minerals, protein shakes and other products, while NutriFit reminds the client about every intake and shows programme adherence, including a reminder when the supply runs low.
- [Physical activity and training in NutriFit](https://nutrifit.health/knowledge/dnevnik-aktivnosti-nutrifit/md): The activity module covers more than 200 sports and workout types, estimates energy expenditure and shows the overall movement load, so coaches can connect training programmes with nutrition and progress.
- [Lab results in NutriFit](https://nutrifit.health/knowledge/laboratornye-analizy-nutrifit/md): 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.
- [The NutriFit food diary](https://nutrifit.health/knowledge/dnevnik-pitaniya-nutrifit/md): The NutriFit food diary supports three input modes: photo estimation, the product database and manual entry. It tracks calories and macronutrients as well as micronutrients, and lets you build daily, weekly and composite menus.
- [Languages and localisation in NutriFit](https://nutrifit.health/knowledge/yazyki-i-lokalizaciya-nutrifit/md): The NutriFit interface and content support six languages: Russian, English, Spanish, Ukrainian, Kazakh and Uzbek. Russian is the reference version for the knowledge base; other locales are translations on top of it with their own SEO metadata.
- [NutriFit mobile apps for iOS and Android](https://nutrifit.health/knowledge/mobilnye-prilozheniya-nutrifit/md): Beyond the web version, NutriFit ships native apps for iOS and Android. The mobile layer covers daily scenarios — quick food logging, supplement check-ins, measurements and push reminders — and syncs data from wearables.
- [Wellness test: a personal calculation in two minutes](https://nutrifit.health/knowledge/wellness-test-nutrifit/md): The wellness test is the short questionnaire that starts your work in NutriFit. From goal, sex, age, height, weight and activity level the system calculates maintenance calories, target calories, protein, BMI and water, then suggests which module to start with.
- [What NutriFit is](https://nutrifit.health/knowledge/chto-takoe-nutrifit/md): NutriFit is a digital platform for nutrition consultants, dietitians, fitness coaches and their clients. It brings nutrition, physical activity, supplements, lab results, body measurements and communication into a single profile so that both sides see one picture of health and real progress.

## Articles
- [How to get started with NutriFit: six steps](https://nutrifit.health/knowledge/kak-nachat-rabotu-v-nutrifit/md): A step-by-step first-run scenario for NutriFit: from the short questionnaire and body metrics to uploading lab results, saving the profile and moving into continuous guidance.

## News
- [The NutriFit public knowledge base is live](https://nutrifit.health/knowledge/baza-znaniy-nutrifit-zapusk/md): The NutriFit knowledge base is now public. Materials are available to people as regular pages and to AI agents as Markdown, while search engines receive Schema.org markup, a sitemap and hreflang for every available language.

## FAQ
- [Billing, wallet and referrals: frequently asked questions](https://nutrifit.health/knowledge/faq-oplata-i-referaly/md): How to top up the internal balance in USDT via TRC20 and BEP20, how the Premium subscription is paid, how to request a payout and where to see the operations ledger, plus referral links and the L1, L2, L3 structure.
- [Marathons and Plan 90: frequently asked questions](https://nutrifit.health/knowledge/faq-marafony-i-plan-90/md): How marathon mechanics work — sprints, tasks, results and leaderboards, why the format is team-based, and how a specialist runs a 90-day plan with daily logs and lifecycle statuses.
- [AI insights and predictions: frequently asked questions](https://nutrifit.health/knowledge/faq-ai-insaity/md): Which data feeds NutriFit AI insights, the five prediction heads available, the daily generation limits for free and Premium access, and what happens when the external AI provider is unavailable.
- [Lab results and genetics: frequently asked questions](https://nutrifit.health/knowledge/faq-analizy-i-genetika/md): How to add and edit lab results, check specific markers quickly and export to PDF, plus the genetic passport: what it contains, what the PGx section is for and how genetic data can be erased.
- [Troubleshooting common issues in NutriFit](https://nutrifit.health/knowledge/faq-reshenie-chastyh-problem/md): The situations users hit most often: empty reports, calorie differences between screens, entries that fail to save, temporarily unavailable AI insights and problems with support attachments.
- [Health diary and supplements: frequently asked questions](https://nutrifit.health/knowledge/faq-zdorove-i-dobavki/md): Which entry types the health timeline supports, how to view trends instead of single values, how manual entry differs from device data, and how the supplement cycle works from card to intake log.
- [Nutrition and training: frequently asked questions](https://nutrifit.health/knowledge/faq-pitanie-i-trenirovki/md): How to start the food diary, which reports are available, how to edit recipes and speed up daily logging, plus the common question about gross versus net calories across screens.
- [Account, security and support](https://nutrifit.health/knowledge/faq-akkaunt-i-podderzhka/md): How sign-in works in NutriFit, how to protect the account with 2FA and passkeys, how to control active sessions and devices, and how support tickets work: creation, statuses and attachments.
- [Frequently asked questions about NutriFit](https://nutrifit.health/knowledge/chastye-voprosy-o-nutrifit/md): Consolidated answers to the most common questions about the NutriFit platform: what it is, who it suits, whether it works without a consultant, what data is needed and how personal data is handled.

## Full version
- [llms-full.txt](/llms-full.txt): full text of all materials in Markdown.