Until the past five years, there was not a lot of interest in putting money into ageing research - one reason was the belief that you couldn't do anything about it. The other thing is if you do slow down the ageing process, maybe that'll be bad because we'll just have more people in nursing homes.

195

From the rodent models that have been looked at, the increase in lifespan is usually in the range of 15-30% maximum.

148