Selenio

Ingesta recomendada [7, 8]:

• Mínimo: 55μg/día. Otras fuentes sugieren 70μg/día [9].
• Máximo: 255μg/día

Es preferible usar alimentos como fuente de selenio, no suplementos [5], porque el selenio inorgánico es más tóxico que el orgánico [4].

La nuez de Brasil es el alimento con más selenio y debe controlarse su ingesta. 207-6815μg/100g [2] o 10040 ± 530µg/100g [3]. Principalmente en forma orgánica [6].

Referencias 

1. DINH, Quang Toan, et al. Selenium distribution in the Chinese environment and its relationship with human health: A review. Environment international, 2018, vol. 112, p. 294-309.

2. APOLINÁRIO, Lilian Fioravanso, et al. Supplementation of the maternal diet with Brazil nut (Bertholletia excelsa HBK) prevents cognitive impairment in the offspring of obese mothers. Journal of Developmental Origins of Health and Disease, 2023, vol. 14, no 6, p. 795-804.

3. DONADIO, Janaina LS, et al. Genetic variants in selenoprotein genes modulate biomarkers of selenium status in response to Brazil nut supplementation (the SU. BRA. NUT study). Clinical Nutrition, 2019, vol. 38, no 2, p. 539-548.

4. FU, Shaojie, et al. Effects of selenium on chronic kidney disease: a mendelian randomization study. Nutrients, 2022, vol. 14, no 21, p. 4458.

5. ZHU, Daiwen, et al. Higher serum selenium concentration is associated with lower risk of all-cause and cardiovascular mortality among individuals with chronic kidney disease: A population-based cohort study of NHANES. Frontiers in Nutrition, 2023, vol. 10, p. 1127188.

6. ALCÂNTARA, Daniel B., et al. Selenium in Brazil nuts: An overview of agronomical aspects, recent trends in analytical chemistry, and health outcomes. Food Chemistry, 2022, vol. 372, p. 131207.

7. EFSA 2023.

8. MONSEN, Elaine R. Dietary reference intakes for the antioxidant nutrients: vitamin C, vitamin E, selenium, and carotenoids. Journal of the Academy of Nutrition and Dietetics, 2000, vol. 100, no 6, p. 637.

9. EFSA 2014. Scientific Opinion on Dietary Reference Values for selenium.