It could reduce fertility below the point of no return.

Being overweight or obese reduces fertility in both men and women.

Aging brings with it many effects that may reduce fertility.

This model may be particularly relevant for diseases that reduces fertility.

Affected males are often infertile, or may have reduced fertility.

How long will it take for improved economic conditions to start reducing fertility?

But women have another vitamin C problem to worry about: large doses of it may reduce fertility.

Some will have no choice; chemotherapy will reduce or end fertility in about a third.

The result is that for the first time in human history, mankind has purposely reduced fertility.