Sentences with phrase «paternal age increases»

Chris Barratt, an expert in sperm biology from the University of Birmingham, says that as paternal age increases the number of errors at each of the sperm production «checkpoints» increases.

Not exact matches

Though research suggests that the paternal - age effect is most significant for fathers over 40, younger fathers may also face an increased risk, possibly because spermatogenesis in very young fathers is more likely to result in the same mutations seen in older fathers.

The researchers said that advanced paternal age, as they call it, has also been linked to an increased risk of birth defects, cleft lip and palate, water on the brain, dwarfism, miscarriage and «decreased intellectual capacity.»

These imprinting defects may give rise to the increased risk of schizophrenia, autism and perhaps some of the other ailments related to paternal age.

The study found that the odds of developing schizophrenia increased by 30 percent for each 10 - year increase in paternal age.

In addition, we performed a supplemental analysis to rule out the possibility that paternal problems in reciprocal social behavior, which were assessed during mid-pregnancy, simultaneously with maternal problems in reciprocal social behavior, increased the risk for infantile aggression at 18 months of age.

Advancing maternal and paternal age are associated with increased risk of miscarriage.

There is ample empirical evidence that maternal and paternal controlling behavior in general is related to an increase in disruptive behavior in children of different ages (see meta - analyses [19], [25]-RRB-.

Several smaller studies have investigated the relationship of paternal and child mental health, and they have reported related findings among children of different ages than those in the study reported in this article.14, — , 21 One study found an association between paternal depression and excessive infant crying.45 Another study found that children aged 9 to 24 months with depressed fathers are more likely to show speech and language delays, 19,21 whereas another study reported that children aged 2 years with depressed fathers tended to be less compliant with parental guidance.17 Among children aged 4 to 6 years, paternal depression has been found to be associated with increases in problems with prosocial behaviors and peer problems.15 Only 1 other study we are aware of was population based; it was from England and investigated related issues among much younger children, 23 demonstrating that both maternal and paternal depressive symptoms predicted increased child mood and emotional problems at 6 and 24 months of age.

At child age 5, higher levels of paternal depression and anxiety increased the effect of low effortful control on ODD.