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"July 10, 2008 | Shelley Wood New York, NY - Despite eating a diet rich in omega-3 fatty acids, Alaskan Eskimo are developing subclinical atherosclerosis at an early age, likely due in large part to heavy smoking, a new study shows [1]. According to investigators, in a paper published online July 10, 2008 in Stroke, rates of carotid atherosclerosis in the mostly young to middle-aged subjects participating in the Genetics of Coronary Artery Disease in Alaska Natives (GOCADAN) study were significantly higher than those reported in US population-based studies of other ethnic groups. But as Dr Alexis Cutchins (Weill Cornell Medical College, New York, NY) and colleagues report, rates of current smoking among the Eskimo population studied were also four to six times higher than that of other US populations in similar studies. "I don't think there's anything very surprising here, but I guess what is novel is that the findings relate to a population that has not been studied much, if at all, in this regard," study coauthor Dr Mary J Roman (Weill Cornell Medical College) told heartwire. "And I think that the message is one that has public-health implications for everybody else: this is basically a reiteration of the fact that smoking is a very potent cardiovascular risk factor, and I think the indoctrination that most of us have received about the ills of smoking have clearly not penetrated the Alaska Eskimo population.""

Prevalence and correlates of subclinical atherosclerosis in Alaska Eskimos: the GOCADAN study. Cutchins A, Roman MJ, Devereux RB, Ebbesson SO, Umans JG, Zhu J, Weissman NJ, Howard BV. Stroke. 2008 Nov;39(11):3079-82. Epub 2008 Jul 10. PMID: 18617652 doi: 10.1161/STROKEAHA.108.519199 Conclusions- Alaska Eskimos have similar traditional risk factors for carotid atherosclerosis as other ethnic and racial populations but have higher prevalences of atherosclerosis, possibly attributable to higher rates of smoking.

Consumption of omega-3 fatty acids is not associated with a reduction in carotid atherosclerosis: the Genetics of Coronary Artery Disease in Alaska Natives study. Ebbesson SO, Roman MJ, Devereux RB, Kaufman D, Fabsitz RR, Maccluer JW, Dyke B, Laston S, Wenger CR, Comuzzie AG, Romenesko T, Ebbesson LO, Nobmann ED, Howard BV. Atherosclerosis. 2008 Aug;199(2):346-53. Epub 2007 Dec 4. PMID: 18054937 doi:10.1016/j.atherosclerosis.2007.10.020 Conclusions Dietary intake of omega-3 FAs in a moderate-to-high range does not appear to be associated with reduced plaque, but is negatively associated with IMT. The presence and extent of carotid atherosclerosis among Eskimos is higher with increasing consumption of saturated FAs.

Blood pressure and atherogenic lipoprotein profiles of fish-diet and vegetarian villagers in Tanzania: the Lugalawa study. Pauletto P, Puato M, Caroli MG, Casiglia E, Munhambo AE, Cazzolato G, Bittolo Bon G, Angeli MT, Galli C, Pessina AC. Lancet. 1996 Sep 21;348(9030):784-8. PMID: 8813985 Interpretation In these villagers, consumption of freshwater fish (300-600 g daily) was associated with raised plasma concentrations of n-3 polyunsaturated fatty acids, lower blood pressure, and lower plasma lipid concentrations. In conclusion, our findings confirm that the favourable risk factor profile originally described for Eskimos living on a diet rich in n-3 polyunsaturated fatty acids is real, and not overestimated.

This month, the authoritative International Agency for Research into Cancer (IARC) have weighed in on the issue. By gathering a group of expert scientists, they have looked at all the available evidence and published a detailed report on vitamin D and cancer. The massive tome weighs in at 465 pages, but we'll take a look at the key points in the first of two posts looking at the vitamin D debate. It is impossible for us to get more than about five percent of the vitamin D we need from our diet - unless, like Eskimos, we eat oily fish three times a day.

"People looking at the health of the Inuit have demonstrated that the traditional diet, which is almost exclusively raw meat, is in fact very healthy for them," Smit said. "But because of the new difficulties hunting, people are adapting their diets to what's available in the stores.