(1) body weight
- Women who have BMI >29, <19 are likely to take longer to conceive
- Men who have BMI >29 are likely to have reduced fertility.
Alcohol consumption 3-4 units/day for men, unlikely to affect the semen quality but excessive alcohol Intake is detrimental to it
For women, both active and passive smoking are likely to affect their chance of conception
For men,there is association between smoking and reduced semen quality!!!
( NICE guideline 2012 )