If you are curious why people age check this out. Have you ever seen a woman who looks 40 but you are shocked when you find out she is 60. Or you see the opposite when you come across a guy who looks 60 but in fact he is 40. The reason why there are people who differentiate in such drastic ways comes down to DNA and healthy life style.
Let’s first look at DNA: which is molecules needed that contain the instructions an organism needs to develop, live and reproduce.
Telomere: The end of a chromosome. Chromosomes are nucleic acids and proteins found in every cell which contain DNA. The ends of chromosomes are structures that are involved in the replication and stability of DNA molecules. A telomere is a length of DNA that is made up of a repeating sequence.
Telomeres get shorter each time a cell copies itself, but the important DNA stays intact. Eventually, telomeres get too short to do their job, causing our cells to age, stop functioning properly and may even die. Therefore, telomeres act as the aging clock, in every cell.
Now let’s take a look at healthy life style vs unhealthy life style which plays a huge part too. If you are a person who exercises regularly, eats a good healthy diet, maintains a good weight, gets adequate sleep, keeps their stress levels down (whether that be environmental, relationship or work stress.) This will help keep your telomeres longer which will help you live a younger and healthier life.
Now on the other hand if you eat a poor diet, don’t exercise, maintain an obese weight, don’t sleep that much, smoke, drink, or do drugs and are highly stressed you will most likely live an older and shorter life because your telomeres will shorten and you will damage your DNA.
Here is a great article from nature.com https://www.nature.com/subjects/telomeres
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