Table 1.

Source of exposure genome-wide association study summary data.

Exposure	Main analysis		Secondary analysis			Population ancestry	Data source
	Number of SNPs	% of variance explained		Number of SNPs	% of variance explained
Cu	2	4.60		2	4.60	European	(21)
Se	1	1.93	QIMR	3	3.86	European	(21)
	1	2.89	ALSPAC	3	4.78	European
Zn	2	4.59		5	7.57	European	(21)
Vitamin B6	1	0.05		4	0.17	European	Ieu: ukb-b-7864
Vitamin B12	6	1.85		9	2.23	European	(22)
Vitamin C	11	1.78		17	2.09	European	(23)
Vitamin D	105	2.70		164	2.93	European	(24)
Vitamin E	0	–		6	0.23	European	Ieu: ukb-b-6888