The 10 best US products to battle seasonal affective disorder, according to experts

Therapy lights, sunrise alarm clocks and infrared saunas can all help shake the winter blues as the weather dropsHeated socks and puffy booties: what people in the coldest cities on Earth are wearingSign up for the Filter US newsletter, your weekly guide to buying fewer, better thingsAs a lifelong Canadian, I'm no stranger to that familiar sinking feeling in my chest as the days get shorter, dimmer and colder. I suffer from seasonal affective disorder (Sad), which also affects about one in 20 people in the US."Sad is a type of depression that happens at certain times of the year, usually in the fall and winter when there's less sunlight," said Dr Stefanie Mazer, a licensed psychologist and founder of the psychology practice Mindwise, Inc. Changes in sunlight can affect your body's internal clock and levels of serotonin and melatonin, which influence mood and sleep, Mazer explained. People with Sad often feel low energy, sadness and irritability, with noticeable changes in sleeping or eating.For gentle wake-ups in the morning:Hatch Restore 3 Sunrise Alarm Clock Continue reading...