The inexpensive options can be just as good—if you pick the ... B6 can damage nerves. Too much vitamin A (other than as beta-carotene) may cause headaches, liver damage, weakened bones, and ...
For some of life’s most annoying symptoms — tiredness, dizziness, fuzziness, paleness — sometimes it’s the gloomy weather and season change to blame. Other times it may be an iron deficiency.