SCIENTISTS are developing a blood test that can show how fast someone is ageing.

It aims to give a person’s true biological age rather than the actual chronological age and may lead to the prediction of a human lifespan.

But would anyone want to know?

It’s all right if you are 22 and fit as a fiddle and the test says: “Get ready to jive till you’re 85.”

But what if you’re 50 and the result says: “Don’t worry, you can pack a lot into 18 months.”

We all know we are going on the same journey but why would anyone want to know the date of their departure? For one thing, you’d spoil the surprise.

It’s not as if you need to check your passport is in order and pack your holiday clothes in a suitcase. I mean, you won’t know what the weather is going to be like until you get there.

“I’ll be going Monday week.”

“Fancy, a mystery trip, and you never were a good traveller.”

“I’ll take some Kwells, just in case.”

“It’s a shame you’re off so soon. You’ll miss the rest of I’m A Celebrity Get Me Out Of Here and the X Factor.”

Every cloud has a silver lining.