New research has found that being overworked can physically alter the brain. Researchers in South Korea set out to understand how working long hours impact the cognitive and emotional health of employees. The study, published in the journal Occupational & Environmental Medicine, assessed the brain volume of 110 healthcare workers who were classified by the categories of overworked — working greater than or equal to 52 hours per week — and non-overworked. […] The increased brain volume as observed was found in regions associated with executive functions, (study co-author Wanhyung) Lee said, such as memory, decision-making and attention — as...