And the upper age limit should rise from 39 to 42 in England and Wales.

BBC: IVF should be given sooner and to older women, says NICE

Maybe we should have an upper age limit for treatment?

BBC: South: Health dilemma

"Unlike other organs, which must be donated immediately, corneas can be donated up to 24 hours after death and there is no upper age limit on corneal donation, " a trust spokesman said.

BBC: Hospital's plea for organ donors

The National Institute for Health and Clinical Excellence said the upper age limit should rise from 39 to 42 in England and Wales, with women under 40 being offered three cycles of IVF.

BBC: Obese women miss out under IVF shake-up

But it is heaven for the young and flexible: help-wanted signs usually impose an upper age limit of 30, and the shift to free enterprise has put a premium on educated newcomers who do not have to unlearn the bad old ways.

ECONOMIST: A survey of the young

According to American College of Endocrinology literature, the range of normal TSH level is broad, from 0.5 to an upper limit of near 5, depending on a patient's gender, age and other factors.

WSJ: U.S. Track's Unconventional Physician

The latest RDAs of vitamin D increased to 600 IU for adults up to the age of 70 and 800 IU for adults older than 70, and the tolerable upper limit increased from 2, 000 to 4, 000 IU per day for adults.

CNN: How much vitamin D do I need?