Sun, fish, and seaweed

I imagine I would do better with more fish and seaweed. However, a recent talk at TED, <a href="http://www.ted.com/talks/nina_jablonski_breaks_the_illusion_of_skin_color.html" rel="nofollow">http://www.ted.com/talks/nina_jablonski_breaks_the_illusion_...</a>, implies that we are getting enough sun even at higher latitudes. Humans at higher latitudes seem to have quickly evolved to lighter skin colors to allow more Vitamin D production. Drastic movements between latitudes may cause more harm than good.

I'm not sure why he would say <i>the unhealthiest population on earth ─ meaning Americans</i>, when you have places like Swaziland, with a life expectancy of 32 years (vs. 78, according to the CIA).<p>Which of those countries would you say has a bigger health crisis?

The blogger disqualified himself when he said: "Seaweed, like plants found on land, are also rich in phytonutrients." -- note the last word, which means "plant nutrients." The sentence is then as devoid of novel claims as saying that "bread is made of wheat" and "meat is made of muscle."