It is interesting research, however findings in Caenorhabditis elegans (a roundworn) cannot always be related directly to humans. We might have some similar genes but they can interact in different ways in humans, we are a wee bit more complicated. Hyping up your findings a bit is a good way to increase your research funding :)
Having said that low levels of insulin generally mean good insulin sensitivity, which is a good thing.
I know one population of people with low insulin levels:
Low serum insulin in traditional Pacific Islanders--the Kitava Study.
"Serum fasting insulin levels were
lower in Kitava than in Sweden for all
ages (P < .001). For example, the mean
insulin concentration in 50- to
74-year-old Kitavans was only 50% of
that in Swedish subjects. Furthermore,
serum insulin decreased with age in
Kitava, while it increased in Sweden
in subjects over 50 years of age."
"The low serum insulin that decreases
with age in Kitavans adds to the
evidence that a Western lifestyle is a
primary cause of insulin resistance.
Low serum insulin may partly explain
the low prevalence of cardiovascular
disease in Kitavans and probably
relates to their marked leanness."
It must be the very low-carb diet they are famous for eating...
I think the most likely outcome of this research is the production of drugs to block insulin-like growth factor (IGF-1) so people can be healthier while still eating what they want.