Effects of egg yolk choline intake on cognitive functions and plasma choline levels in healthy middle-aged and older Japanese: a randomized double-blinded placebo-controlled parallel-group study

Table 6 Effects of egg yolk choline on plasma choline levels in subjects

	group	n	⊿ 6 weeks				⊿ 12 weeks
	group	n	Mean	±	SE	P-value	Mean	±	SE	P-value
Plasma free choline level (μM)	Placebo	21	0.34	±	0.51	0.039^*	0.04	±	0.58	0.415
Plasma free choline level (μM)	Choline	20	1.80	±	0.46		1.06	±	0.65
Plasma fat-soluble choline level (μM)	Placebo	21	− 0.14	±	0.10	0.106	87.9	±	68.8	0.681
Plasma fat-soluble choline level (μM)	Choline	20	0.05	±	0.05		117.5	±	42.1

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