Why Are People Living Longer? It's Not Because We Are Evolving!
January 22, 2017
If mutations degrade the human genome and we are in effect devolving, then why are we living longer? It seems if we are living longer then we are improving and we can expect to keep improving just like evolution would say, right?
This article discussed this topic and shows that the reason we are living longer is not improving genetics, but improvements to health and diet. The article states, "Since the 19th century, average life expectancy has risen almost continuously thanks to improvements in public health, diet, the environment and other areas".
Some believe the increase is age will continue. The article states, "Demographers as well as biologists have contended there is no reason to think that the ongoing increase in maximum lifespan will end soon, but our data strongly suggest that it has already been attained and that this happened in the 1990s".
In fact, this article discussed the maximum age possible for humans and references how mutations are what limit the age span. The article states, "Further progress against infectious and chronic diseases may continue boosting average life expectancy, but not maximum lifespan. While it's conceivable that therapeutic breakthroughs might extend human longevity beyond the limits we've calculated, such advances would need to overwhelm the many genetic variants that appear to collectively determine the human lifespan". In other words, mutations in our genome limit our ability to live. Since we know mutations accumulate more and more with each generation, we can deduce that past generations had less mutations. This points to the first human generations as having very few mutations and also explains how the ages of those in the Bible who lived hundreds of years was possible. It is genetics that makes long life possible.
I'm busy working on my blog posts. Watch this space!