circadian rhythms

A 2025 review in Frontiers in Psychiatry argues that ADHD should be considered partly a circadian rhythm disorder, citing evidence of delayed sleep timing in patients and discussing chronotherapy — timed light exposure, melatonin and adjusted medication schedules — as a treatment avenue. Readers are debating how strong the causal evidence is and whether timing-based interventions could change standard ADHD care.

Australian researchers have identified a new subtype of depression connected to disruptions in the body's circadian rhythm. The findings suggest that for some patients, disturbed sleep-wake cycles may play a central role in their condition, potentially opening the way for treatments that target the body clock rather than relying solely on conventional antidepressants. Details of the study are drawing interest from both clinicians and the public.

A new report suggests that not getting enough daylight could be linked to a higher risk of dementia. The findings add to growing research on how light exposure affects brain health, with daylight playing a role in circadian rhythms and overall wellbeing. Readers are sharing the article as a reminder of the potential health importance of daily outdoor light exposure.

A new study suggests that roughly one in four people with severe, recurrent or persistent depression may have a proposed subtype called 'circadian depression'. People with this profile often report waking up exhausted, being night owls, or having disrupted sleep-wake rhythms, raising questions about whether aligning treatment with a patient's body clock could improve outcomes for depression.

Australian researchers have identified a new subtype of depression, dubbed 'circadian depression', linked to disruptions in the body's internal clock. A study of more than 11,000 participants found the subtype affected nearly a quarter of them, suggesting sleep and circadian rhythm disturbances may define a distinct form of depression that could benefit from targeted treatments.

A recent examination of health effects suggests that making daylight saving time permanent in the United States would have measurable consequences for the body. Experts point to the role of morning light in regulating sleep and circadian rhythms, noting that darker winter mornings could affect sleep patterns, mood and overall wellbeing. The discussion comes as lawmakers continue debating whether the country should adopt year-round daylight saving time.

Researchers in Australia have identified a new subtype of depression linked to disruptions in the body's circadian rhythm. The finding suggests some patients whose symptoms follow patterns of sleep and body clock disturbance may need different treatment approaches. The discovery is being reported as a potentially significant step in understanding why standard depression treatments do not work for everyone.

New coverage suggests your circadian rhythm may be influencing your eating habits, beyond simple hunger. The report points to the body's internal clock playing a role in when and how people eat, with potential implications for nutrition advice and meal timing. The finding is being shared as a surprising twist on everyday eating behaviour.