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The study is published in the European Heart Journal. The
researcher said light
was a new risk factor for heart disease. He suggested that reducing light while sleeping could be a
for preventing heart disease. The researchers advised people to turn off
, televisions, and smartphones in their
. They said people needed to make the room as
as possible. They added: "The
is simple and inexpensive: blackout
, warm-coloured bedside lighting, and covering the
standby LEDs on household
."
