The library

Vitamins & minerals

Understand nutritional roles, formulations, and the limits of supplementation.

825 articles · Page 6 of 35

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  1. Page 1ADHD and vitamin deficiency: links do not establish a single causethrough Daily B12 requirements: age, pregnancy and the difference from treatment
  2. Page 2Does B12 deficiency change stool color? Color is not a B12 testthrough Sublingual B12 versus swallowed tablets: what the route changes
  3. Page 3Choosing a B12 supplement starts with why it is neededthrough Biotin for nails: promising anecdotes are not a reliable growth guarantee
  4. Page 4Biotin supplements: vitamin B7, not an automatic hair treatmentthrough Calcium in older adults: an adequate intake and fracture prevention are different goals
  5. Page 5Calcium for premenstrual symptoms: a three-cycle randomized trialthrough Too much choline: the adult upper limit is a boundary, not a goal
  6. Page 6Choline and fatty liver: deficiency correction is not a universal treatment dosethrough Copper supplement amounts: micrograms, milligrams and total intake
  7. Page 7Copper and magnesium: assess two needs, not a fixed ratiothrough Folate: keep DFE and folic acid quantities distinct
  8. Page 8Folic acid after colorectal adenomas: no preventive benefitthrough What IU means on vitamins: 2,000 IU vitamin D equals 50 micrograms
  9. Page 9How do Inuit get vitamin C without fresh vegetables? A varied food systemthrough Iron supplement interactions: why one spacing rule is not enough
  10. Page 10Periods and iron status: replacing iron while addressing blood lossthrough Does light therapy increase vitamin D? Check whether it contains UVB
  11. Page 11Does Liquid I.V. contain magnesium? The product line mattersthrough Magnesium bicarbonate water: what the home recipe does and does not establish
  12. Page 12Magnesium for blood pressure: modest findings are not a medicine replacementthrough Low magnesium symptoms: why cramps alone do not establish deficiency
  13. Page 13Can magnesium delay a period? Do not assume the supplement explains itthrough How much magnesium glycinate should you take? Count elemental magnesium
  14. Page 14Too much magnesium glycinate: count elemental magnesium across productsthrough Can magnesium cause night sweats? Review the timing and other causes
  15. Page 15Magnesium oil, spray and cream: application is not proof of absorptionthrough Who needs caution with magnesium supplements? Kidney function, medicines and age matter
  16. Page 16How fast do magnesium supplements work? Match the clock to the purposethrough Medicines that can lower magnesium: diuretics and acid suppression have different effects
  17. Page 17Can metformin lower magnesium? Possible losses need a broader assessmentthrough Niacin and B12: two B vitamins with different functions and risks
  18. Page 18ONTRAC: nicotinamide reduced new skin cancers during treatmentthrough Low potassium: identify losses and shifts before choosing replacement
  19. Page 19Potassium and magnesium foods: track each mineral separatelythrough Is sciatica caused by vitamin deficiency?
  20. Page 20Seafood nutrients: salmon, tuna and shrimp have different strengthsthrough What is the best vitamin for stiff joints? Diagnose the cause first
  21. Page 21Stopping a magnesium supplement: consider why it was being usedthrough Uricase treatment is not interchangeable with an enzyme supplement
  22. Page 22Vanadium supplements: a small specific trial does not settle benefit or safetythrough Vitamin B12 10,000 mcg: a high amount that needs a clear purpose
  23. Page 23Vitamin B12 for arthritis: nerve symptoms and joint disease need different carethrough Can vitamin C cause nausea? High intake can make it worse
  24. Page 24Vitamin C as an antioxidant: biological activity versus health outcomesthrough Iron with or without vitamin C: an equivalence trial
  25. Page 25Vitamin C with kidney disease: adequacy and excess need separate reviewthrough Vitamin C in tomatoes and tomato juice: compare the actual servings
  26. Page 26Vitamin C versus vitamin E: shared antioxidant language, different nutrientsthrough Vitamin D and cancer: prevention, mortality and treatment are different claims
  27. Page 27Vitamin D chemical structure: D2, D3 and the opened ringthrough Vitamin D with flaxseed oil: fat absorption does not prove a special pairing
  28. Page 28Foods that provide vitamin D: natural sources, fortification and portionsthrough Is taking vitamin D at night bad for sleep? No universal clock rule
  29. Page 29Vitamin D is a nutrient and a hormone precursorthrough Vitamin D and B12 have different roles and different status tests
  30. Page 30Does vitamin D deplete vitamin A? Do not infer a balancing dosethrough Vitamin E and heart disease: antioxidant plausibility did not establish prevention
  31. Page 31Vitamin E and hot flashes: one symptom changed while other outcomes did notthrough Vitamin K deficiency: adult causes differ from newborn risk
  32. Page 32Vitamin K2 in dialysis: improved status did not slow calcificationthrough Vitamin X is not a recognized essential vitamin
  33. Page 33Which vitamins fade dark spots? C, A, B3, D and E comparedthrough Too much zinc: stomach symptoms, copper depletion and hidden exposure
  34. Page 34Zinc-finger nucleases: engineered DNA targeting is not a dietary zinc effectthrough The human egg zinc spark: fluorescent detection of zinc release
  35. Page 35What zinc sulfate does, and how to read its dosethrough Oral zinc for warts: an adjunct trial found no added cryotherapy benefit
Ingredient guide

How long does choline take to work?

There is no universal minutes-to-weeks timetable for feeling a benefit from choline. Absorption, normal nutrient use, correction of a deficiency and a claimed cognitive improvement are different processes. An adequately nourished person may notice no subjective effect at all.

2 sources
Ingredient guide

Does choline help with weight loss?

Choline supports normal lipid transport and metabolism, but that does not make choline supplements a proven weight-loss treatment. Correcting a deficiency is different from causing sustained fat loss in someone whose intake is adequate. A product described as lipotropic still needs evidence for meaningful weight outcomes.

2 sources
Ingredient guide

Can a newborn be circumcised without vitamin K? Bleeding risk and clinic policy

Skipping vitamin K increases concern about bleeding during and after newborn circumcision. Some services require the injection before scheduling the procedure; CHOP explicitly includes it in its office criteria. Do not assume that waiting a few days or having a healthy-looking baby removes vitamin K deficiency bleeding risk.

4 sources
Ingredient guide

Collagen and creatinine: do not assume the powder explains the result

The inspected evidence does not establish a predictable creatinine rise from ordinary collagen supplementation. Creatinine results depend on kidney function and several other factors. A new high result should be reviewed clinically, with the supplement label disclosed rather than dismissed as harmless.

5 sources
Ingredient guide

Collagen during pregnancy or breastfeeding: limited specific safety evidence

Collagen peptides are not an essential pregnancy or breastfeeding supplement. The inspected clinical summary does not establish safety for every formulation in these populations. Review the exact product with the maternity or lactation care team, especially if it contains added herbs or high-dose nutrients.

4 sources
Ingredient guide

Does constipation mean a vitamin deficiency?

Constipation does not identify a missing vitamin. Bowel habits, fiber, medicines and underlying conditions usually need to be considered before choosing supplements.

3 sources