Menu
Total

Vitamin A: Vision of the Night

0 Comment

Facebook Twitter Google+ LinkedIn A brief history… Deficiency of vitamin A has a recorded history dating back to Hippocrates (“let food be thy medicine”) and even the Egyptians, with Liver being a therapeutic food for centuries owing to its abnormally high vitamin A content – whether anyone knew that it was the vitamin A doing the work or not! It was not until 1912 when McCollum and Davis identified an essential vitamin (vitamin = ‘vital amine’) that was fat soluble, as opposed to water soluble, and therefore was identified as ‘Fat-Soluble Factor A’ in order to differentiate it from the…

You must be logged in to view content on the site, but don't worry, it's free!

Not a member of the KnowHowNation yet? No worries, register here for your free or premium membership!

We don't have any ads or popups and keep our mailing list subscription separate, so you will only get content updates and offers if you opt into them. If you can commit to a free account to free health and nutrition information, then you can commit to far bigger and better changes as you progress. Be a part of the KnowHowNation.

  • - £49.99 / 1 Year
    Enjoy all blog posts, articles, videos and links elsewhere PLUS full free access to all recipes and workouts, with a 10% discount on boxing equipment and 25% discount on KnowHowMerch to boot!
    - Free
    Enjoy all blog posts, articles, videos and links elsewhere! You can still download our recipes and workouts at a small cost, but once you buy it once, they're yours forever.

    Select a Payment Method

    No payment methods are available for the selected subscription plan.

Tags: , , , , ,

Leave a Reply

Your email address will not be published. Required fields are marked *

20% OFF EVERYTHING in June with discount code JUNE20! Including all future bookings paid for in June! Dismiss