Why am I so tired all the time?
Answered by Dr. Nitnem Singh Sodhi · Mental Health Counsellor, Neuropsychologist & Psychotherapist · Updated 2026-06-02
Short answer
Chronic tiredness that persists despite adequate sleep is a signal, not a personality trait. Common mental-health causes include depression, anxiety, burnout and unprocessed grief. Common medical causes include anaemia, thyroid dysfunction, vitamin D or B12 deficiency, sleep apnoea and diabetes. Rule out the medical layer first.
Rule out the medical layer first
Before assuming the fatigue is emotional, get a basic panel: haemoglobin, ferritin, TSH, vitamin D, vitamin B12, fasting glucose and HbA1c. In Indian adults these deficiencies are extremely common and reliably produce the exact symptoms — heavy limbs, foggy head, low motivation — people otherwise blame on depression. A partner sleeping next to loud snoring should also prompt a sleep-apnoea evaluation.
The mental-health layer
If the medical panel is clean, the most likely explanations are depression (which lowers energy output), anxiety (which spends energy on the alarm system), burnout (which is depletion after prolonged unrecovered demand) and unprocessed grief. The PHQ-9 and K10 on this site will localise this in about five minutes.
What actually restores energy
Regular sleep and wake times (not just hours in bed). Daylight within an hour of waking. Movement every day, even if brief. Protein at breakfast. One block of unscheduled time weekly. If low energy has been present most days for six weeks or more, treat it as a clinical signal and get evaluated — this is one of the most treatable presentations in psychiatry.
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