Downs syndrom och cancer

Ur ScienceDaily:

Most cancers are rare in people with Down syndrome, whose overall cancer mortality is below 10 percent of that in the general population. Since they have an extra copy of chromosome 21, it's been proposed that people with Down syndrome may be getting an extra dose of one or more cancer-protective genes.

Jag törs dock gissa att huvudorsaken är en annan - från Wikipedia:

One study, carried out in the United States in 2002, showed an average lifespan of 49 years

Mer angående cancer och ålder:
- Malignt melanom-larm
- Hans Rosling om bröstcancer