As winter approaches and daylight hours grow shorter, people prone to seasonal depression can feel it in their bodies and brains. “It’s a feeling of panic, fear, anxiety and dread all in one,” said Germaine Pataki, 63, of Saskatoon, Saskatchewan. She’s among the millions of people estimated to have seasonal affective disorder, or SAD. Her coping strategies include yoga, walking and an antidepressant medication. She’s also part of a Facebook group for people with SAD. “I try to focus on helping others through it,” Pataki said. “This gives me purpose.” People with SAD typically have episodes of depression that begin in the fall and ease in the spring or summer. Changing the clocks back to standard time, which happens this weekend, can be a trigger for SAD. A milder form, subsyndromal SAD, is recognized by medical experts, and there’s also a summer variety of seasonal depression, though less is known …