[willis77]

> Sorry, but, this required a new study?

Yes, it requires study, unless all of this is obvious to you:

"The twin cohort displayed distinctive pathway enrichment based on sleep duration differences. Habitual short sleep was associated with up-regulation of genes involved in transcription, ribosome, translation, and oxidative phosphorylation. Unexpectedly, genes down-regulated in short sleep twins were highly enriched in immuno-inflammatory pathways such as interleukin signaling and leukocyte activation, as well as developmental programs, coagulation cascade, and cell adhesion."

[vishbar]

Even if that is obvious to you somehow, it still needs a study. A lot of "obvious" ideas have been overturned when put under experiment.

[overcast]

My mother used to tell me that all the time while growing up.