�New enquiry by Aberdeen scientists suggests that Seasonal Affective Disorder (SAD) relates to an ancient timing mechanism in the head dating plump for millions of years.
Discoveries by a University of Aberdeen-led team, involving collaborators in Edinburgh and Strasbourg, and published in the latest issue of Current Biology, disgorge new insights into the mechanisms by which seasonal rhythms ar generated.
The researchers studied the naive Soay engender of sheep, which relies on its strong seasonal worker biology to survive violent on the N. Atlantic islands of St Kilda.
They identified a new role for a chemical known as thyroid stimulating hormone (TSH), which is secreted by cells in the
