Kuala Lampur, Aug. 30 -- They say only death and taxes are certain in this life.

Though in fact if you avoid death long enough to have to pay lots of taxes, you typically have to face a third unpleasant certainty - ageing.

Now ageing, of course, is a natural part of life - I actually love getting older as it means I am still alive.

But at a certain point or rather at a certain age, the simple act of living can become difficult.

As early as their 60s, people sometimes find their memory isn't what it used to be.

Strength declines and things like going up stairs are just harder than they used to be.

Of course as one goes from 70 to 80 to 90 and beyond, these things tend to get harder and health complaints tend to become more frequent....