Best answer
Although causative factors have yet to be fully elucidated, potential causes include,increased rates of obesity, poor diet, and exposure to environmental toxins. How this decline in sperm counts reflects fertility has yet to be determined.
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Why is the population growing but fertility rates are declining?
Globally, the population is growing while fertility rates continue to decline. This is because population growth is calculated based on fertility rate, death rate and migration. But what are the primary reasons for declining fertility rates?
What factors influence the total fertility rate?
This post will examine four factors that influence the total fertility rate (TFR), including a female鈥檚 age when she has her first child, educational opportunities for females, access to family planning, and government acts and policies that affect childbearing.
Why do sperm counts decline?
Summary: There exist substantial data to suggest a decline in sperm counts over time. Although causative factors have yet to be fully elucidated, potential causes include, increased rates of obesity, poor diet, and exposure to environmental toxins. How this decline in sperm counts reflects fertility has yet to be determined.
What does it mean when the total fertility rate drops?
If a TFR is dropping, it may mean there will be a larger population of older adults in the future, assuming other factors remain stable. Governments and international organizations use the total fertility rate to forecast these population changes and help plan for services, education, and other societal needs.