Table 1.

Classification of relationships between ovulation disorders and lifestyle factors in ovulatory infertility.

Lifestyle Factor	Possibly Related Disorder from WHO Classification (Group)	Degree of Relationship with Ovulatory Infertility
Diet	PCOS (II)	Possible positive/negative relationship Co-dependence with obesity and insulin resistance
Insulin Resistance	PCOS, hyperprolactinemia, thyroid dysfunction (II)	Possible positive relationship Co-dependence with diet and obesity
Oxidative stress	PCOS, hyperprolactinemia, thyroid dysfunction, endometriosis (II) Primary ovarian insufficiency (III)	Probable positive relationship (degree of relationship varies depending on the disorder) Co-dependence with insulin resistance Possible weak causal relationship
Sleep	PCOS (II)	Unknown, possible association
Physical activity		Possible negative relationship
	PCOS (II)	Possible weak positive relationship
		Co-dependence with obesity
	Hypogonadotropic hypogonadism (I)	Possible negative relationship
Supplementation	PCOS (II)	Negligible