knowledge base

Medical Library

177 evidence-based articles + 10 holistic-medicine book reviews — in each of the 3 languages. Endocrinology, metabolism, nutraceuticals, anti-aging. Scientific perspective without populism.

177articles
15categories
3languages
15+years of practice

Frequently asked questions

25

Short answers to the questions people search for most: what it is, who it matters for and what to do.

PCOS and insulin resistance: what helps bring the cycle back
endocrinology

PCOS and insulin resistance: what helps bring the cycle back

Polycystic ovary syndrome is not a disease of the ovaries but a metabolic disorder, and one of its key links is insulin.…

7 minRead
Vitamin D in winter: how much you need and how to take it so it works
supplements

Vitamin D in winter: how much you need and how to take it so it works

In winter, the sun at our latitudes barely triggers vitamin D production in the skin, and levels drop in many people. Th…

7 minRead
B12 deficiency: symptoms, who is at risk and how it is replenished
supplements

B12 deficiency: symptoms, who is at risk and how it is replenished

Vitamin B12 is needed for nerves, blood and energy, and running short of it is more common than it seems: after 60, in v…

7 minRead
Zinc: why you need it, signs of deficiency and how much is safe
supplements

Zinc: why you need it, signs of deficiency and how much is safe

Zinc is needed for immunity, skin, taste and smell, wound healing and hormones. Supplements may shorten a cold, but the …

7 minRead
Omega-3: how much EPA and DHA you need and who benefits
cardiology

Omega-3: how much EPA and DHA you need and who benefits

The omega-3 fatty acids EPA and DHA have the strongest evidence for lowering triglycerides, and prescription purified EP…

7 minRead
Coenzyme Q10: do you need it on statins and what studies have shown
cardiology

Coenzyme Q10: do you need it on statins and what studies have shown

Statins lower the level of coenzyme Q10, a substance cells need to produce energy. The good news: in heart failure, Q10 …

7 minRead
Folic acid or methylfolate: what is the difference and which to choose
supplements

Folic acid or methylfolate: what is the difference and which to choose

Every dividing cell needs folate, and folic acid before conception is one of the best-proven supplements: in trials it l…

7 minRead
Vitamin C: does it help with colds and how much to take
supplements

Vitamin C: does it help with colds and how much to take

Vitamin C is needed for skin, blood vessels and iron absorption. In most people it barely lowers the risk of a common co…

7 minRead
Iodine in Hashimoto’s: can you take it and how much
thyroid

Iodine in Hashimoto’s: can you take it and how much

The thyroid needs iodine, including in Hashimoto’s, and pregnancy calls for more of it. The caution concerns supplements…

7 minRead
Biotin for hair and nails: does it work, and why it distorts lab tests
diagnostics

Biotin for hair and nails: does it work, and why it distorts lab tests

Biotin is a popular supplement “for hair and nails”. If you are deficient in biotin, it may help, and it helped brittle …

7 minRead
Vitamin B6: why you need it and why too much harms nerves
supplements

Vitamin B6: why you need it and why too much harms nerves

Vitamin B6 is needed for amino acid metabolism, and in studies it eased nausea in early pregnancy and, probably, the sym…

7 minRead
Calcium tablets: are they needed for bones, and do they harm the heart
supplements

Calcium tablets: are they needed for bones, and do they harm the heart

Calcium is the main mineral of bone, and getting enough of it matters at any age. Food is the place to start. Calcium ta…

7 minRead
Vitamin A and beta-carotene: the difference and who is at risk from excess
supplements

Vitamin A and beta-carotene: the difference and who is at risk from excess

Vitamin A is needed for vision, skin and immunity, and its main source is a varied diet. Retinol from animal foods and b…

7 minRead
Which vitamins and minerals should not be taken together: what is proven and what to space apart
supplements

Which vitamins and minerals should not be taken together: what is proven and what to space apart

Real conflicts between vitamins and minerals are few, and the most important of them involve medicines: thyroid pills, s…

7 minRead
Vitamin overdose: signs and which are most dangerous
supplements

Vitamin overdose: signs and which are most dangerous

In usual doses, vitamins and minerals are safe: problems start with high doses, long-term use and stacking several suppl…

7 minRead
Chromium (chromium picolinate): does it help with sugar cravings and diabetes
diabetes

Chromium (chromium picolinate): does it help with sugar cravings and diabetes

Chromium is called insulin’s helper and a remedy for sugar cravings. The good news: in people with type 2 diabetes, meta…

7 minRead
L-carnitine: does it help weight loss and who really needs it
supplements

L-carnitine: does it help weight loss and who really needs it

L-carnitine helps cells burn fat, and the body makes it on its own. A supplement may be needed by those who lack carniti…

7 minRead
Alpha-Lipoic Acid for Diabetic Neuropathy: What the Studies Showed
diabetes

Alpha-Lipoic Acid for Diabetic Neuropathy: What the Studies Showed

Burning, tingling and numbness in the feet are common complaints in diabetes. The good news: in studies, short courses o…

7 minRead
Lutein for the eyes: who it helps and how much is needed
supplements

Lutein for the eyes: who it helps and how much is needed

Lutein and zeaxanthin are yellow pigments in the center of the retina that absorb blue light. Their benefit is best stud…

7 minRead
Vitamin B1 and benfotiamine: who needs it and does it help the nerves
supplements

Vitamin B1 and benfotiamine: who needs it and does it help the nerves

Vitamin B1 is needed to get energy from food and for the nerves to work. It runs short with alcohol misuse, after bariat…

7 minRead
Normal TSH in adults: table and when to see a doctor
thyroid

Normal TSH in adults: table and when to see a doctor

TSH is a simple, inexpensive test and the first step in checking the thyroid. The usual normal range is roughly 0.4 to 4…

7 minRead
Why are my hands and feet always cold: 6 causes and which tests to get
endocrinology

Why are my hands and feet always cold: 6 causes and which tests to get

Hands and feet that feel cold even in a warm room are a common complaint. The good news: many causes are easy to check —…

7 minRead
Hypothyroidism or burnout: how to tell them apart by symptoms and tests
endocrinology

Hypothyroidism or burnout: how to tell them apart by symptoms and tests

Fatigue and low energy occur both with a shortage of thyroid hormones and with burnout. The good news: a simple blood te…

7 minRead
Hair falling out and nails breaking: which tests to get
diagnostics

Hair falling out and nails breaking: which tests to get

Has your hair started shedding and your nails splitting? Most often there is an explanation: shedding after an illness, …

7 minRead
Thyroid tests: which to get and what they show
thyroid

Thyroid tests: which to get and what they show

Thyroid testing starts with one test — TSH — and the rest are added as needed. In plain words: what TSH, free T4 and T3 …

7 minRead

Videos

5

Long-form videos on YouTube (in Russian): a topic walked through chapter by chapter, with sources.

Guides

5

Phone-sized PDFs (in Russian) for the posts and articles: composition, mechanism, human studies, how to take.

Cobra Gut: 7 компонентов для желудка и кишечника

Что в капсуле, как каждый компонент работает в пищеварительном тракте и что показали исследования на людях

PDF · 10 pages · 22.10.2026

Фосфокреатин — разбор с источниками

Капельница и укол в мышцу: что написано в итальянской инструкции, что показали исследования на людях и что говорит допинг-контроль

PDF · 17 pages · 21.10.2026

Без сахарных качелей

Ночные провалы глюкозы: почему 7,4 после 2,6 ммоль/л (133 после 47 мг/дл) — не пик, 11 опор стабильности и 7 ужинов для ровной ночи

PDF · 18 pages · 20.10.2026

Имеглимин (TWYMEEG) — коротко: польза и дозы

Первый препарат класса глиминов. Коротко: что он даёт и как его принимают

PDF · 7 pages · 27.08.2026

Рак, который можно не оперировать сразу

Активное наблюдение при низкорисковом раке щитовидной железы: что это, кому подходит и почему врачи всё чаще выбирают наблюдение вместо немедленной операции

PDF · 6 pages · 25.06.2026

After-visit explanations

6

Patient PDFs (in Russian): what the result means, what to do next and when to call the doctor.

Хашимото (аутоиммунный тиреоидит)

Что значат антитела к щитовидной железе, почему это не всегда болезнь, что лечат, что проверяют заодно — и когда звонить

PDF · 15 pages · 20.10.2026

Субклинический гипотиреоз

Что означает этот результат анализа, что делать дальше и когда звонить врачу

PDF · 18 pages · 20.10.2026

Приём Thyroid-S

Что это за препарат, как его принимать, что контролировать и когда звонить

PDF · 12 pages · 20.10.2026

Преддиабет

Сахар уже выше нормы. Что это значит для сердца, почек и зрения, сколько лет жизни это может стоить — и как это остановить, пока обратимо

PDF · 16 pages · 20.10.2026

Узел щитовидной железы

Что значит «нашли узел», почему это чаще всего не опасно, что делают дальше и когда звонить

PDF · 15 pages · 20.10.2026

Усталость и стресс

Почему вы устаёте, что стоит проверить, что значат анализы на кортизол, что действительно помогает — и когда звонить

PDF · 14 pages · 20.10.2026

Channel topics

12

One topic, several formats (in Russian): article, guide PDF, plain-language PDF, video. Grey = not ready yet.

Index of all materials · 187