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In what ways has the human species evolved biologically over the last 1,000 years?

Overbite:

Our teeth used to meet, top and bottom. Now a large proportion of people have the top teeth extending out over the bottom teeth.

I read somewhere the wisdom tooth situation has gotten worse, that is, fewer people have the jaw structure for them to come in. Perhaps for that reason, evolution is now getting rid of wisdom teeth altogether, and people are now born who either never develop them, or develop them only as small buds that don't threaten neighboring teeth.

Increase of many medical conditions that used to make one unlikely to reproduce, because science/medicine can now compensate for them, such as diabetes.

Isolated populations that move to high altitude environments quickly develop changes in their blood that enable it to carry more oxygen.

Resistance to countless diseases that appeared on the scene in that time frame, so that we are not as susceptible to them as we were when they first appeared. Often there is a co-evolution with the disease, with viruses and bacteria mutating to be less fatal, so their hosts will survive longer to spread them.

Red-heads:

Defect in the MC1R gene causes red hair, freckling and an increased incidence of melanoma (1000 years give or take a few centuries)

New mutations appearing recently, not yet widely spread:

Apolipoprotein AI-Milano Improves processing of cholesterol and lowers odds of heart disease and arterial blockage

Bone Density:

One of the genes that governs bone density in human beings is called low-density lipoprotein receptor-related protein 5, or LRP5 for short. Mutations which impair the function of LRP5 are known to cause osteoporosis. But a different kind of mutation can amplify its function, causing one of the most unusual human mutations known.

This mutation was first discovered fortuitously, when a young person from a Midwest family was in a serious car crash from which they walked away with no broken bones. X-rays found that they, as well as other members of the same family, had bones significantly stronger and denser than average. (One doctor who's studied the condition said, "None of those people, ranging in age from 3 to 93, had ever had a broken bone.") In fact, they seem resistant not just to injury, but to normal age-related skeletal degeneration. Some of them have benign bony growths on the roof of their mouths, but other than that, the condition has no side effects - although, as the article notes dryly, it does make it more difficult to float. As with Apo-AIM, some drug companies are researching how to use this as the basis for a therapy that could help people with osteoporosis and other skeletal diseases.

Malaria resistance:

As reported in 2001 (see also), Italian researchers studying the population of the African country of Burkina Faso found a protective effect associated with a different variant of hemoglobin, named HbC. People with just one copy of this gene are 29% less likely to get malaria, while people with two copies enjoy a 93% reduction in risk. And this gene variant causes, at worst, a mild anemia, nowhere near as debilitating as sickle-cell disease.


This information was taken from Quora. Click here to view the original post.

Do you know more examples of human evolution? Tell us in the comments below!

#Science #History #Society #Quora

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What are your thoughts on this subject?
17 Comments
billyboy915
Sal Campion, You truly do not understand the theory of evolution. We did not come from today's apes. We, apes and man, evolved in different ways from a common ancester. That's why we share so much of our DNA.
6
Mar 24, 2019 8:21PM
Pat Lord Lawson
Roger Butler, "take you pick" . Is that good English?
0
Oct 20, 2021 4:55PM
Dawn Rapp Tomczyk
Carole Truswell, He gave us free will. ...that's why there is evil
0
Dec 9, 2019 10:40PM
Wendy Hankison Kayne
Interesting! Bone density caught my attention. I never broke a bone and I have a bony growth on the roof of my mouth.
0
Dec 7, 2019 1:45PM
Darlene Davidson
Mutations occur spontaneously. It doesn't take 1000 years.
0
Nov 5, 2019 5:54PM
Roger Butler
I assume this originates from America where English continues to get mangled. Title should read ‘In what ways have.....’ or ‘In what way has.....’. Take you pick but don’t confuse plurals with singulars.
3
Aug 19, 2019 6:12PM
cmyork
Very interesting. I’m fascinated by all things real. I enjoy philosophy such as religion but opinions and stories handed down over the years just don’t have the science and data behind them like bones and DNA.
0
Jun 3, 2019 9:30PM
Diane Thompson
The real monkey business is when people believe we had anything to do with coming from apes.
0
May 23, 2019 6:11AM
Diane Thompson
Don Toombs, absolutely right. Don't worry about all the negative replies you get - truth is truth regardless of what other people believe.
2
May 23, 2019 6:10AM
Diane Thompson
billyboy915, what rubbish!
1
May 23, 2019 6:08AM
Irene A
Don tombs you are a sad man
0
Jul 18, 2018 5:09PM
Luis Perez
Quite interesting information.
0
Jul 15, 2018 7:10PM
Carol Berry
Sal Campion, Maybe we branched off!
1
Jul 15, 2018 3:11AM
sharky
Sal Campion, exactly I am no ape.
1
Jul 15, 2018 1:47AM
Bert Acenas
If indeed we evolved from apes, how come such claimed evolution stopped.
1
Jul 14, 2018 7:50PM

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