3 ms·

This is true, but the bioavailability of non-heme iron is 14-18% of heme iron https://ods.od.nih.gov/factsheets/Iron-HealthProfessional/ https://ods.od.nih.gov/

This is true, but the bioavailability of non-heme iron is 14-18% of heme iron https://ods.od.nih.gov/factsheets/Iron-HealthProfessional/ https://ods.od.nih.gov/factsheets/Iron-HealthProfessional/ It makes sense to just eat a balanced diet.

petre 9y ago
Also zinc and copper is found in animal sources. The only non-animal source for vitamin D is UV exposed mushrooms.
- deleted 9y ago
  [deleted]
- lostlogin 9y ago
  Or alternatively you can just go outside for a bit.
  - cperciva 9y ago
    You could sunbathe naked in Vancouver for six months a year and not get enough vitamin D.
    - lostlogin 9y ago
      I had a look, and while that's an exaggeration it's certainly hard to get enough of it in winter. In summer in Calgary it's 600IU per min while in winter it takes 2 hours 42 minutes to get that much. http://purenorth.ca/vitamin-d-your-health/how-much-do-i-need/ http://purenorth.ca/vitamin-d-your-health/how-much-do-i-need...
      - cperciva 9y ago
        That calculator is assuming "midday sun", which doesn't last for very long. (Also, I've been told that 1500 IU/day is what I should aim for.)
        lostlogin 9y ago
        That's a lot more than the likes of the Mayo clinic recommend but presumably there is a reason for that. Even if there wasn't, nearly 3 hours outside per day in winter is not that attractive sounding.
        cperciva 9y ago
        My understanding is that 600 IU/day is a "we have lots of evidence that getting less than this is bad" whereas 1500 IU/day is "we know this is completely safe, and there's some evidence that it's better than 600 IU/day". Rather like vitamin C, there's some debate about how much is optimal, but you need to take truly astounding amounts in order to cause adverse effects.
  - seanmcdirmid 9y ago
    Just wear enough protection, especially if you are in austrailia. Skin cancer is also on the rise.
    - fian 9y ago
      But not too much protection: http://www.smh.com.au/lifestyle/diet-and-fitness/the-great-aussie-paradox-vitamin-d-deficiency-rates-soar-20121023-282kg.html http://www.smh.com.au/lifestyle/diet-and-fitness/the-great-a...

petre 9y ago

Also zinc and copper is found in animal sources. The only non-animal source for vitamin D is UV exposed mushrooms.

deleted 9y ago
[deleted]
lostlogin 9y ago
Or alternatively you can just go outside for a bit.
- cperciva 9y ago
  You could sunbathe naked in Vancouver for six months a year and not get enough vitamin D.
  - lostlogin 9y ago
    I had a look, and while that's an exaggeration it's certainly hard to get enough of it in winter. In summer in Calgary it's 600IU per min while in winter it takes 2 hours 42 minutes to get that much. http://purenorth.ca/vitamin-d-your-health/how-much-do-i-need/ http://purenorth.ca/vitamin-d-your-health/how-much-do-i-need...
    - cperciva 9y ago
      That calculator is assuming "midday sun", which doesn't last for very long. (Also, I've been told that 1500 IU/day is what I should aim for.)
      - lostlogin 9y ago
        That's a lot more than the likes of the Mayo clinic recommend but presumably there is a reason for that. Even if there wasn't, nearly 3 hours outside per day in winter is not that attractive sounding.
        cperciva 9y ago
        My understanding is that 600 IU/day is a "we have lots of evidence that getting less than this is bad" whereas 1500 IU/day is "we know this is completely safe, and there's some evidence that it's better than 600 IU/day". Rather like vitamin C, there's some debate about how much is optimal, but you need to take truly astounding amounts in order to cause adverse effects.
- seanmcdirmid 9y ago
  Just wear enough protection, especially if you are in austrailia. Skin cancer is also on the rise.
  - fian 9y ago
    But not too much protection: http://www.smh.com.au/lifestyle/diet-and-fitness/the-great-aussie-paradox-vitamin-d-deficiency-rates-soar-20121023-282kg.html http://www.smh.com.au/lifestyle/diet-and-fitness/the-great-a...