beta carotene

  1. RealNeat

    Anti-A people, how do you respond to D?

    I've been researching the relationship of vitamin A and D. Before I give any of my own input I'd like to know how the people who benefit from vitamin A restriction feel on vitamin D supps or intentional sun bathing. Please include your history of pharmaceutical A use if applicable.
  2. N

    Beta-Carotene Is A Retinoid Antagonist

    There were some trials in the past that showed increased lung-cancer incidence with "Vitamin A" supplementation in smokers. That also led to questions regarding the safety of retinol. Since beta-carotine supplementation was central in those trials the following study seems interesting...