Data source

[1] U.S. Department of Agriculture, Agricultural Research Service (2012) USDA National Nutrient Database for Standard Reference, Release 25. Nutrient Data Laboratory Page
[2] Health Canada (2010) Canadian Nutrient File, 2010 version. Health Canada Page
[3] National Research Council (2006) Dietary Reference Intakes. The Essential Guide to Nutrient Requirements. Washington, DC: The National Academic Press
[4] Institute of Medicine (2011) Dietary Reference Intakes for Calcium and Vitamin D. Washington, DC: The National Academic Press
[5] Institute of Medicine (2011) Dietary Reference Intake Tables and Application. Institute of Medicine Page
[6] Simopoulos AP (2008) The importance of the omega-6/omega-3 fatty acid ration in cardiovascular disease and the other chronic diseases. Exp Biol Med (Maywood): 233(6): 674-88
[7] Gomez Candela C, Bermejo Lopez LM, Loria Kohen V (2011) Importance of a balanced omega-6/omega-3 ratio for the maintenance of health: nutritional recommendations. Nutr Hosp: 26(2): 232-9
[8] National Heart, Lung, and Blood Institute (2012) How are overweight and obesity treated? National Heart, Lung, and Blood Institute Page
[9] Nutrition.gov (2013) Interested in losing weight? Nutrition.gov Page
[10] Office of Dietary Supplements (2011) Dietary Supplement Fact Sheet: Vitamin B12. Office of Dietary Supplements Page
[11] Office of Dietary Supplements (2011) Dietary Supplement Fact Sheet: Vitamin D. Office of Dietary Supplements Page

Nutrient Database

Most of products and nutrients' values come from USDA database [1]. Some missing nutrients were taken from Canadian database [2].

Dietary Reference Intakes

The dietary reference intakes are a group of nutrient reference values for health population. The concept of DRI includes health maintenance, prevention of chronic diseases and adverse effects of nutrient overdose. The DRIs are developed by the Institute of Medicine of the U. S. National Academy of Science which advise the US government on scientific matters. Nutrition recommendation on HappyForks derive from publications [3] and [4]. Easy-to-read DRI tables are also available [5].
Omega 6 to Omega 3 ratio and "Weight goal" calculations are not DRI recommendations.

Omega 6 : Omega 3

There is no clear line between good and bad omega ratio. On the basis of the available publications [6] [7], we decided that the boundary is smooth.

Weight goal

The magnitude of energy deficit for healthy weight loss has been developed from publications [8] [9]. Energy demands for weight gain has been calculated in the same way. On the basis of publication [8], the minimal healthy energy intake has been established.