DR(osophilia)

[Guest guest]

Hi Rodney,

Somehow, I missed that when you first posted it. Thanks for re-

posting it.

Here's the full article for those interested:

http://www.owlnet.rice.edu/~bios201/2003%20news/switching%

20lifestyles%20and%20lifespan.pdf

These results are completely different to those achieved in other

studies. It looks like they just suddenly switched them to 40% DR

after a certain period of days with no slow reduction in calories.

And it does indeed seem that the flies then had the same mortality as

those on DR all of their lives.

Thanks again Rodney.

Katrina.

> > > > Good stuff. But why do you assume CRON increases lifespan by

> > only

> > > > 27%? (75 to 95).

> > >

> > > I based the assumption on a 1-for-1 basis. 26% reduction in

> > calories

> > > = 26% (ish) increase in years. I know this is vague, but we

are

> > > making so many assumptions, and it's as good as guess as any

> other

> > > when it comes to humans. In reality, we may not even get 20

> years

> > > because we are starting later in life. 15% increase in

lifespan

> > for

> > > a 26% reduction starting at age 30 might be more likely. And

> > that's

> > > assuming that we reduced our calorie intake slowly enough at

the

> > > beginning not to negate all the benefits and actually cause an

> > > earlier death.

> > >

> > > > Do not the species tested see increases more like 40%? (Dr.

> > > Walford

> > > > talks of an extension from 110 to 155 for maximum lifespan, I

> > > > believe).

> > >

> > > The increase in lifespan of up to 40% was for a 40% reduction

in

> > > calories, I believe, over a longer period of time.

> > >

> > > > Also, you take 75 years as a base. It is a realistic number

> for

> > > > people born in 1925, but perhaps not for those born in the

> 1940s

> > > > 1950s and 1960s.

> > >

> > > Perhaps.

> > >

> > > Katrina.