Table 1.

SNP heritability estimates $\left(h_{\mathrm{g}}^2\right)$ and number of significant GWAS loci for the most heritable 20 dietary habits.

Dietary habit	N	$h_{\mathrm{g}}^2$	SE	P value	Number of significant loci
Milk type: soy milk vs. never	31,889	0.282	0.010	5.8 × 10−175	1
Milk type: full cream vs. never	43,995	0.243	0.007	4.8 × 10−264	1
Spread type: tub margarine vs. never	77,738	0.182	0.004	<1.00 × 10−300	5
Among current drinkers, drinks usually with meals: yes vs. no	235,312	0.160	0.001	<1.00 × 10−300	30
PC1	449,210	0.136	0.001	<1.00 × 10−300	140
Spread type: flora + benecol vs. never	86,823	0.133	0.004	2 × 10−242	2
Milk type: other milk vs. never	20,557	0.128	0.015	1.42 × 10−17	0
Overall alcohol intake	448,623	0.121	0.001	<1.00 × 10−300	98
PC3	449,210	0.118	0.001	<1.00 × 10−300	82
Glasses of water per day	445,965	0.116	0.001	<1.00 × 10−300	78
Total drinks of alcohol per month	449,210	0.113	0.001	<1.00 × 10−300	104
Spread type: low fat spread vs. never	72,017	0.110	0.004	1.8 × 10−166	0
Coffee type: decaffeinated vs. any other	353,710	0.108	0.001	<1.00 × 10−300	36
Pieces of fresh fruit per day	447,401	0.108	0.001	<1.00 × 10−300	99
Overall cheese intake	438,453	0.108	0.001	<1.00 × 10−300	60
Spread type: butter vs. never	213,549	0.102	0.001	<1.00 × 10−300	15
Frequency of adding salt to food	448,890	0.102	0.001	<1.00 × 10−300	82
Among current drinkers, drinks usually with meals: yes/, it varies, no	357,136	0.101	0.001	<1.00 × 10−300	29
Bread type: white vs. wholemeal/wholegrain + brown	416,312	0.100	0.001	<1.00 × 10−300	46
Milk type: skimmed vs. never	108,035	0.098	0.003	<1.00 × 10−300	1