Table 3.

Heritability of dietary intake traits

Trait	Heritabilitya			Sibship effect
	h 2	SE	P	S	SE	P
Vegetables (d/wk)	0.26	0.05	7.8 × 10−09	0.0	0.0	NA
Uncooked vegetables (d/wk)	0.13	0.05	7.2 × 10−04	0.0	0.0	NA
Fruit (d/wk)	0.23	0.06	3.4 × 10−05	0.006	0.05	0.45
Juice (d/wk)	0.12	0.05	0.048	0.0	0.0	NA
Fish (d/wk)	0.12	0.05	0.001	0.0	0.0	NA
Snack (d/wk)b	0.26	0.05	2.7 × 10−09	0.0	0.0	NA
Fast food (d/wk)b	0.004	0.05	0.47	0.04	0.05	0.21
Soft drink (d/wk)	0.08	0.05	0.037	0.0	0.0	NA
“Healthy” (factor)	0.32	0.06	3.1 × 10−09	0.0	0.0	NA
“Unhealthy” (factor)	0.27	0.06	3.8 × 10−06	0.005	0.05	0.50

h ² Heritability, SE standard error of heritability of sibship estimate, S sibship effect, NA not applicable

^aHeritability estimates were based on a polygenic model including age and gender as covariates. Estimates that differed significantly from zero are listed in bold

^bExamples regarding snacks: chips, French fries, peanuts, cheese, cookies, pastry, chocolate, candy. Examples regarding fast food: ready-to-eat frozen meals such as pizza; McDonalds, Burger King, or fried meals. See also supplementary information S1