sleeping pills risk cancer

3.1: news.health/sleeping pills/
increased risk of death and cancer: 

The higher the dose, the greater the risk of dying,
while people on higher doses also had
higher risks of cancer .
. any drug for sleep -- benzodiazepines, non-benzodiazepines,
barbiturates and sedative antihistamines --
increased the risk of dying;

[but death from cancer was not specified .]

3.10: news.health/vit'e
protects against sleep-loss nerve damage:
The neuroprotective effect of vitamin E on
chronic sleep deprivation-induced memory impairment:
the role of oxidative stress.Behavioural Brain Research, 2012;226(1):205-10

"Sleep deprivation induces memory impairment,
and treatment with 100mg/kg vitamin E orally
prevented this impairment probably through
its antioxidant action in the hippocampus.
. chronic sleep deprivation induces a reduction in
hippocampus antioxidant markers including
glutathione (GSH), oxidized glutathione (GSSG)
and GSH/GSSG, glutathione peroxidase (GPx),
catalase, and superoxide dismutase (SOD)
. vitamin E normalized the GSH/GSSG ratio,
and the activity of catalase, SOD, and GPx .