«Women could have had the best of both worlds — securing paternal investment from a long - term mate and high - genetic quality from affair partners — but only if those affairs were timed at a point of
high fertility within the cycle, and probably only if their affairs remained undiscovered.»
Not exact matches
The first major trial assessing the effect on
fertility of lifestyle adjustment in obese women was published earlier this year and found that a weight - loss intervention preceding
fertility treatment did not result in
higher rates of healthy singleton birth
within 24 months.
However, those cancers diagnosed later
within the study period (2005 - 2012) were associated with
higher rates of pregnancy than those diagnosed earlier (1981 - 1988), suggesting that for some cancer treatments the impact on
fertility has reduced.
This is
higher than the UN's medium estimate of about 11 billion, but
within the range of the low and
high fertility estimates (7 and 17 billion, respectively).