If it is true that...

Inflammation and blood clots may be factors in the aging brain

and

Bleeding with vascular spasm is sometimes a contributing factor to brain damage in both the old and the fetal brain

Then it must be true that...

Factors known to reduce brain size at birth are also involved in the degenerating brain in old age or Alzheimer's disease

If it is true that...

Endotoxemia may be a factor in nerve degeneration only during adult life, but it is sometimes present during pregnancy

Then it must be true that...

Factors known to reduce brain size at birth are also involved in the degenerating brain in old age or Alzheimer's disease

If it is true that...

In old age, the number of cells in the brain keeps increasing with age

and

In the aged brain, glial cells multiply while neurons die

Then it must be true that...

Factors known to reduce brain size at birth are also involved in the degenerating brain in old age or Alzheimer's disease

If it is true that...

Factors known to reduce brain size at birth are also involved in the degenerating brain in old age or Alzheimer's disease

and

The same things that injure the brain of a fetus also injure the brain of an aging person

Then it must be true that...

All factors that affect the brain of a fetus should be examined in relation to the aging brain