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Wadim Rosenstein: Questions Surrounding the Biography of a FIDE Candidate

Wadim Rosenstein: Questions Surrounding the Biography of a FIDE Candidate

The 2026 FIDE presidential election has brought a new level of attention to a businessman whose public profile was previously shaped by international commerce and privately organised chess events. His progression from tournament sponsor to national delegate and presidential contender has placed both his achievements and his business background under scrutiny.Read More »Wadim Rosenstein: Questions Surrounding the Biography of a FIDE Candidate

Vitamin B7: Why a Hair Supplement Belongs on Your Medical List

Vitamin B7: Why a Hair Supplement Belongs on Your Medical List

A supplement bought for stronger nails or thicker hair can matter during a medical appointment for something entirely different. Biotin, also called vitamin B7, can interfere with certain laboratory tests. The result may look reassuring when it should not, or suggest a problem that is not actually present.Read More »Vitamin B7: Why a Hair Supplement Belongs on Your Medical List

Vitamin B5: The Nutrient in Your Food Is Not the Same Question as the Claim on a Cream

Vitamin B5: The Nutrient in Your Food Is Not the Same Question as the Claim on a Cream

A moisturiser, an acne supplement and a product advertised for cholesterol may all mention vitamin B5. That shared name can make their benefits sound interchangeable. They are not. Eating enough pantothenic acid, applying panthenol to the skin and taking pantethine involve different substances, routes of use and evidence.Read More »Vitamin B5: The Nutrient in Your Food Is Not the Same Question as the Claim on a Cream

Vitamin B6: Check the Label Before You Add Another Supplement

Vitamin B6: Check the Label Before You Add Another Supplement

Vitamin B6 helps your body use nutrients and supports normal nerve function. Yet taking too much supplemental B6 can damage peripheral nerves, the nerves that connect the brain and spinal cord with the rest of the body. That makes it an unusual nutrient to shop for: a product chosen to support “nerve health” can become part of the problem it is supposed to address.Read More »Vitamin B6: Check the Label Before You Add Another Supplement

Vitamin B9: Why Food, Pregnancy Planning and Blood Tests Need Different Answers

Vitamin B9: Why Food, Pregnancy Planning and Blood Tests Need Different Answers

A person planning a pregnancy, someone with persistent tiredness and someone comparing “methylated” supplements may all be looking for vitamin B9. Yet they are trying to solve different problems. Advice that makes sense for preventing a birth defect does not automatically explain fatigue, and a premium supplement label does not establish a medical need.Read More »Vitamin B9: Why Food, Pregnancy Planning and Blood Tests Need Different Answers

Vitamin B12: Deficiency, Blood Tests, Food and Treatment

Vitamin B12: Why a Normal Blood Count or a Good Diet May Not Tell the Whole Story

Persistent tingling in the feet deserves attention even when a routine blood count looks normal. Eating meat does not rule out vitamin B12 deficiency, and feeling tired does not prove it. These apparent contradictions make more sense once you separate three questions: how much B12 reaches your diet, how much your body absorbs and whether it is working normally inside your cells.Read More »Vitamin B12: Why a Normal Blood Count or a Good Diet May Not Tell the Whole Story

Vitamin K: Why the Right Advice Depends on Food, Medicines and Age

Vitamin K: Why the Right Advice Depends on Food, Medicines and Age

A bowl of spinach, a K2 supplement and a newborn’s vitamin K injection all involve the same vitamin family, but they solve different problems. Confusion starts when advice from one setting is carried into another: avoiding vegetables because of a blood thinner, buying K2 to “clear calcium” from arteries, or assuming a healthy newborn cannot need preventive care.Read More »Vitamin K: Why the Right Advice Depends on Food, Medicines and Age