Couples with RPL should be informed that smoking could have a negative impact on their chances of a live birth, and therefore cessation of smoking is recommended.	GPP
Couples with RPL should be informed that maternal obesity or being significantly underweight is associated with obstetric complications and could have a negative impact on their chances of a live birth and on their general health (Lashen et al., 2004; Zhang et al., 2010; Boots and Stephenson, 2011; Lo et al., 2012; Boots et al., 2014).	Strong ⊕⊕○○
Striving for a healthy normal range BMI is recommended.	GPP
Couples with RPL should be informed that excessive alcohol consumption is a possible risk factor for pregnancy loss and a proven risk factor for foetal problems (foetal alcohol syndrome) (Maconochie et al., 2007; Andersen et al., 2012; Avalos et al., 2014).	Strong ⊕⊕○○
Couples with RPL should be advised to limit alcohol consumption.	GPP