Common Medical Causes
- Anaemia, often from low iron, especially in women
- Vitamin B12 or vitamin D deficiency
- Thyroid problems, both under- and overactive
- Uncontrolled sugar, or undiagnosed diabetes
- Recent infections like dengue, typhoid or COVID, which can leave you drained for weeks
- Sleep problems, including snoring with breathing pauses
- Low mood or stress, which can feel exactly like physical tiredness
- Side effects of medicines
Unplanned Weight Loss Needs Attention
Losing more than 5% of your body weight over six to twelve months without trying is worth a proper check-up. Common causes include uncontrolled diabetes, an overactive thyroid, ongoing infections such as TB, and stomach or bowel problems. Less often, it can point to something more serious, which is exactly why it shouldn't be ignored. Uncontrolled sugar is a common cause; see diabetes doctor in Panchkula.
What to Expect at Your Visit
Dr. Ranjana Bhatt will ask about your sleep, diet, periods (for women), mood, weight changes and the medicines you take, and then examine you. Tests are chosen based on what she finds. A typical first round includes a blood count, sugar, thyroid, vitamin B12, vitamin D, and liver and kidney function. You won't be sent for a long, expensive panel unless there is a reason. These tests are also part of a full body checkup in Panchkula.
Simple Things That Help While You Wait for Reports
- Keep regular sleep and wake times, even on weekends
- Cut down on tea and coffee after 4 PM
- Eat proper meals with some protein at each one
- Take a 20 to 30 minute walk in daylight
- Limit screens for an hour before bed
These won't fix a medical cause, but they often make a noticeable difference, and they help your doctor see what is left once the everyday factors are sorted. If low B12 shows up on your report, see vitamin B12 deficiency treatment.
When to See a Doctor Sooner
- Tiredness with fever or night sweats
- Weight loss with loss of appetite
- Breathlessness or chest pain
- Blood in stools or black stools
- Fainting or feeling dizzy on standing
Keep a Two-Week Tiredness Diary
Before your visit, try noting a few things each day for two weeks: when you slept and woke up, how rested you felt, what you ate, how much tea or coffee you had, whether you exercised, and your energy in the morning, afternoon and evening. Women can also note their period dates.
Patterns often stand out quickly: energy dropping after a heavy lunch, poor sleep after late screen time, or tiredness that is worst in the morning. A diary like this helps decide which tests are actually worth doing.
Tiredness After an Illness
After dengue, typhoid, COVID or a bad flu, feeling drained for several weeks is common. Recovery is usually gradual. Rest, regular meals with enough protein, plenty of fluids and slowly increasing activity help most people.
If you are still very tired after six to eight weeks, or new symptoms appear such as breathlessness, palpitations or weight loss, get checked rather than waiting longer.
When Tiredness Is Linked to Mood
Low mood and anxiety often feel physical: heavy limbs, broken sleep, no appetite, or a constant urge to lie down. Many people find this hard to say out loud and come in asking only for blood tests.
It is perfectly fine to mention stress, worry or sadness during a medical consultation. Physical causes are checked at the same time, and if it would help, you can be referred to a counsellor or psychiatrist.
Work, Screens and Energy
Long hours at a desk, late-night phone use and skipped meals are a common combination in office workers, and together they can leave you exhausted even when every test is normal. Screens late at night delay sleep, and caffeine after 4 PM makes it lighter.
Try small changes for two weeks: a fixed bedtime, phone away for the last hour, a proper breakfast, and a short walk in daylight. If energy improves, you have found a big part of the answer. If it doesn't, the next step is a proper medical check-up.
Tiredness in Older Adults
In older people, new tiredness is more likely to have a medical cause, such as anaemia, low sodium, thyroid trouble, heart problems or medicine side effects. It is worth a check-up rather than putting it down to age. Bringing all current medicines to the visit is especially useful, since side effects are a frequent cause. A family member who sees them daily can often describe the change best.
Frequently Asked Questions
Which blood tests should I get for tiredness?
A blood count, sugar, thyroid, vitamin B12, vitamin D, and liver and kidney function cover the common causes.
Can stress cause physical weakness?
Yes. Stress and low mood often show up as tiredness, poor sleep and body ache.
How much weight loss is worrying?
Losing more than 5% of your weight in six to twelve months without trying should be checked.
Can vitamin deficiency cause weakness?
Yes. Low B12, vitamin D and iron are among the most common causes of tiredness in India.
Do I need a full body check-up?
Not always. Targeted tests based on your symptoms are usually more useful than a big package.
Medically reviewed by Dr. Ranjana Bhatt, MBBS, DNB (General Medicine), Associate Director, Internal Medicine, Paras Health Panchkula.