From Jarrod Bailey:

Re: Monkeys live longer after eating lighter: study (July 9): So restricting the calorific intake of monkeys by 30% provides some of them with longer life-spans. Was this knowledge worth incarcerating intelligent and sentient creatures for decades, and keeping half of them permanently hungry? And aside from the ethical problems, what about the scientific merit and usefulness of the conclusions? Studies using human subjects - the real species of interest - have already been done. So what can monkey studies add to these? And how many people will use this knowledge and willingly go hungry to live a little longer anyway? This is bad science, cruel science and wasteful science. The funders and publishers of this ‘research’ should be as ashamed of themselves as those who conducted it.

Jarrod Bailey, Ph.D.