Abortion: Nature or Nurture?

The Numbers

 Here are some approximate numbers related to human reproduction.

Women

• 1 million - The number of eggs a woman is born with.
• 400,000 - The number of eggs left by the time she reaches puberty.
• 400 - The number of eggs released for ovulation over her lifetime.
• 6 - The average number of eggs that get fertilized.
• 3 - The average number of eggs that become a person.

Nature vs. Women

• 99.9% of unfertilized eggs are discarded or reabsorbed (from the time of puberty).
• 50% of fertilized eggs (embryos) are lost (most before the woman knows she's pregnant).
• 10-20% of known pregnancies end in miscarriage.

Men

• Over 500 billion - The number of sperm each man produces in his lifetime.
• 8,700 - Number of ejaculations in his lifetime (Link).
• 80 - 300 million - The number of sperm per ejaculation.
• 6 billion - The approximate number of sperm it takes to make a baby (78 ejaculations).
• 3 - The average number of a man's sperm that become a person.

Nature vs. Man

• 99.99999998% of sperm that are sent on a life-making mission end up dead.

Women vs. Nature

• 360 - The number of eggs not fertilized due to birth control.
• 20% of pregnancies are aborted by the woman's choice (1-3% due to advice from a doctor).

Man vs. Nature

• 99% of sperm are wasted, not making a baby (due to birth control or masturbation)

Conclusion

• Nature wastes more eggs than women do by a ratio of 1,000-to-1 (I'll admit that this is a lame statistic since so many of these eggs never had a chance).
• Nature aborts more embryos than women do by a ratio of 2.5-to-1.
• Man wastes more sperm than nature by a ratio of 25-to-1
• Calculation: Only 3 sperm are needed to make his 3 babies, so nature wastes 3 x 6 = 18 billion. The rest of his 500 billion sperm, or 500 - 18 = 482 billion, are wasted by the man.

Bonus Material

Other parties that try to have a say in the nature vs nurture battle.

• 1-3% of abortions were recommended by doctors for the woman's health.
• 12 states have total abortion bans.
• Female legislators are significantly underrepresented (~22%) in states with total abortion bans.
• 21 states protect abortion.
• Women make up about 40% of the legislature in states with abortion protection.
• Abortion Opinions
• 8-13% of Americans are against abortion in any circumstance.
• 36% of Americans are against abortion in most circumstances.
• Most opposition to abortion is due to religious beliefs.
• Birth Control Opinions
• 9-11% of Americans are opposed to birth control.
• Most opposition to birth control is due to religious beliefs.
• Wasted sperm is a sin like abortion, according to the Catholic and other conservative Christian churches.
• Bloggers write about abortion when they don't have the expertise (hey, that hurt!).