Morgan Gallagher <[log in to unmask]> wrote: > Teresa Pitman wrote: > > Okay, I don't understand this. If it's impossible to get enough > > Vitamin D from the sun, how did people survive all these generations? > > > Biologically, it's a 'new' issue. > > We only left Africa approx 70 000 years ago. For much of that 70 000 > years, Vit D wasn't a major issue, as we migrated very slowly, and our > skin (presumably) lightened to capture more Vit D from the weakening > sun, as we walked a bit, stayed put, had babies, walked a bit more. It > wasn't until we hit the very Northern Climes, with overcast skies much > of the year, and the need to wear clothing and shelter from the elements > all day long, that we ended up having to have exceptionally fair skins, > to capture as much Vitamin D as we possibly could. Also, "we" are not all in Northern climes, and there are no doubt Lactnet members whose ancestors never left Africa, or who left or were taken from African a lot more recently than 70 000 years ago. I have found the Vitamin D conversation tends to centre certain groups of people as the default. Lactnet is a global group; many "we" statements don't encompass us all. Lara Hopkins *********************************************** Archives: http://community.lsoft.com/archives/LACTNET.html To reach list owners: [log in to unmask] Mail all list management commands to: [log in to unmask] COMMANDS: 1. To temporarily stop your subscription write in the body of an email: set lactnet nomail 2. To start it again: set lactnet mail 3. To unsubscribe: unsubscribe lactnet 4. To get a comprehensive list of rules and directions: get lactnet welcome