Why am I tired even after eating healthy?

Short answer

Healthy-looking food can still be too low in calories, protein or key micronutrients. Tiredness can also come from thyroid imbalance, anaemia, low B12, vitamin D deficiency, poor sleep or high stress.

What to review

• Are you skipping breakfast and overeating later?
• Is there protein in every meal?
• Are periods heavy or irregular?
• Are sleep hours and sleep quality poor?
• Have thyroid, haemoglobin, ferritin, B12 and vitamin D been checked recently?

Food patterns that look healthy but drain energy

Fruit-only breakfasts, salad-only lunches and tea-biscuit evenings can look light, but they may leave you under-fuelled. Low energy intake can reduce movement, concentration and training quality. Low protein can also make hunger and cravings worse later in the day.

When to investigate

If fatigue is persistent, sudden, severe, or linked with dizziness, breathlessness, hair fall, missed periods or rapid weight changes, do not treat it as a diet issue only. Medical review and lab work may be needed.

JoFitness Nutrition note

Fatigue should not be guessed forever. JoFitness Nutrition connects food history with symptoms and lab reports, and refers back to medical care when signs need diagnosis.