In Genesis 6:3, it says man can live to be 120, but there is no scientific basis for it.

People pushing the idea that everyone can live to be 100 are perpetuating a myth that goes all the way back to the Bible.

If we do everything right, the best we can do is live out our potential with as little age-related disease and disability as possible.

Ageing is very rare. We only see it in humans and laboratory animals and in zoo animals and in our pets. Basically, organisms that are protected from the external world. Once you create that protection, you live long enough to see ageing.

Researchers have been looking for biomarkers of age for a long time and have failed. People sell tests out there to measure your biological age, and none of them work. There's no evidence that you can measure biological age with any reliability.

The field of ageing research is full of characters. We have hucksters claiming that cures for ageing can be bought and sold; prophetic seers, their hands extended for money, warning that immortality is nigh; and would-be Nobelists working methodically in laboratories in search of a pill to slow ageing.