Research press release





今回、Christina Hicksたちの研究グループは、43か国の魚類種(367種)の栄養組成のデータベースを構築して、ヒトの健康に必須の7種類の栄養素(カルシウム、鉄、セレン、亜鉛、ビタミンA、オメガ3脂肪酸、タンパク質)の濃度を評価した。そして、Hicksたちは、予測モデルを用いて、熱帯に生息する魚類種の方がカルシウム、鉄、亜鉛の濃度が高く、小さな魚類種の方がカルシウム、鉄、オメガ3脂肪酸の濃度が高く、寒冷地域の魚類種はオメガ3脂肪酸の濃度が高いことを明らかにした。


Current levels of production from fisheries could improve the nutritional status of some of the most nutrient-deficient countries in the world, suggests a study published online in Nature.

Deficiencies in micronutrients account for approximately one million premature deaths each year. However, a lack of data on the nutritional composition of most fish, and how nutrient yields vary among fisheries, has hindered the ability to harness fisheries for food and nutrition security.

Christina Hicks and colleagues developed a database of the nutritional composition of 367 fish species, from 43 countries, assessing levels of 7 nutrients that are essential to human health (calcium, iron, selenium, zinc, vitamin A, omega-3 fatty acids and protein). Using a predictive model, they found that tropical species contain higher concentrations of calcium, iron and zinc; smaller species have higher concentrations of calcium, iron and omega-3 fatty acids; and, species from cold regions have higher concentrations of omega-3 fatty acids.

Subsequently, the authors produced global estimates of the nutrient concentrations of marine fisheries and found that the nutrient quality of a fishery is determined by species composition, rather than the quantity of fish. The authors suggest that for a number of countries with populations at risk of nutrient deficiencies, the nutrients available in marine finfish catches exceed the dietary requirements for people living within 100 km of the coast. For example, just 9% of the fish caught by Namibia would be equivalent to the dietary iron requirements for its entire coastal population.

doi: 10.1038/s41586-019-1592-6

「Nature 関連誌注目のハイライト」は、ネイチャー広報部門が報道関係者向けに作成したリリースを翻訳したものです。より正確かつ詳細な情報が必要な場合には、必ず原著論文をご覧ください。

メールマガジンリストの「Nature 関連誌今週のハイライト」にチェックをいれていただきますと、毎週最新のNature 関連誌のハイライトを皆様にお届けいたします。