![](img022.GIF) |
Fertility changes
have an important role to play. Closely spaced births both weaken the mother, who has
insufficient time to recover from the demands of the previous pregnancy before she is once
again pregnant, and mean that children are weaned by the arrival of new baby earlier than
they should be, placing them at greater risk of GI diseases such as diarrhoea, and
subsequent nutritional weakening. The family age distribution is greater. The median age
of infection for common childhood infections is consequently higher, by which time the
child is stronger and more able to resist the infection. More children survive the
infections so the mean age of the population increases, which gives the appearance of an
increase in life life-expectancy.
|