If the human genome is degrading, shouldn’t lifespans be getting shorter?

In today’s feedback, Dr Robert Carter shows how the increase in average human lifespan over the last few centuries is consistent with genetic entropy, and Dr Don Batten answers a skeptic who thinks that a high-school-level education in biology is sufficient to answer informed creationist objections to evolution.

Leo V. from the United Kingdom writes:

I hear a lot from my work friends that people in the Western countries are living to be older and older. If this is true, this would counter evolutionary theory. Sanford’s book on genetic entropy and Cuozzo’s ‘Buried Alive’ (showing evidence that worldwide we are maturing younger-meaning our life spans should shorten) would demand that our life-spans should shorten.

Is it bad research that indicates man is living longer today? God bless you in you work, Leo

CMI’s Dr Robert Carter replies:

Dear Leo,

You ask a great question. I will do my best to explain.

Consider this set of numbers: 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20.
The average of these = 10.

Now consider this set of numbers: 8, 10, 12, 14, 16, 18, 20.
The average of these = 14.

The only difference is that I dropped the first several numbers to create the second set.

This has a direct parallel to human lifespans in modern times. Through the wonders of modern technology, we have figured out how to cure many childhood diseases that used to kill huge numbers of infants and toddlers (cholera, whooping cough, typhoid, small pox, etc.). In essence, we have dropped the highest category of death and moved these people up into the middle of the lifespan distribution. This drastically affects average lifespan, as illustrated in the difference between the two number sets above….

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