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A woman suffering with depression<\/p>\nDr Chun Tang says there are simple solutions that will help you feel better<\/p>\n
Neil Shaw Assistant Editor<\/p>\n
09:31, 13 Nov 2025Updated 10:12, 13 Nov 2025<\/p>\n
A woman suffering with depression<\/p>\n
A doctor has explained why you might have been feeling depressed and suffering from brain fog for the last two weeks. Dr Chun Tang, a GP from Pall Mall Medical<\/a>, said the sudden loss of daylight when the clocks change in autumn can badly disrupt your body\u2019s natural rhythm.<\/p>\n Dr Tang said: \u201cWhen the clocks change, your circadian rhythm, basically your body\u2019s internal timekeeper, gets thrown off. Even a one-hour shift can be enough to leave you feeling tired, cranky, and a little out of sorts.<\/p>\n \u201cLess sunlight in the afternoon means your brain\u2019s getting a double whammy, with your serotonin levels (also known as the happy hormone) dipping, and your sleep hormone, melatonin, ramping up earlier than usual. That\u2019s why many of us are craving carbs, skipping gym sessions, and curling up on the sofa for hibernation season.\u201d<\/p>\n The expert said reduced daylight doesn\u2019t just affect energy levels; it can actually trigger or worsen seasonal affective disorder (SAD). \u201cWe often see an uptick in people feeling down or lethargic in the weeks after the clocks go back,\u201d he added.<\/p>\n