Poor Concentration
Difficulty sustaining attention, mental fogginess, or slow thinking affecting work or daily tasks.
⚠ Seek medical attention if:
Sudden cognitive change, memory loss, confusion with headache or fever
Lifestyle factors
Sleep deprivation, chronic stress, multitasking overload, dehydration, sedentary lifestyle
Nutritional factors
Iron deficiency, omega-3 deficiency, B vitamin insufficiency, blood sugar instability from high refined carb diet
Possible medical causes
ADHD, thyroid dysfunction, anxiety, depression, anaemia
Next steps
Neurological or psychiatric assessment if sudden onset or progressive deterioration
Related nutrients (3)
Low folate is linked to cognitive slowing and poor concentration
Food sources: Spinach (cooked) (~263 mcg folate DFE per cup cooked), Lentils (cooked) (~358 mcg folate DFE per cup cooked), Chestnuts (~20 mcg per 30g), Peanuts (~70 mcg per 30g), Hazelnuts (~35 mcg per 30g), Red beans (adzuki) (~278 mcg per cup cooked), Onion (~15 mcg per 80g), Kidney beans (~230 mcg per cup cooked), Garbanzo beans (chickpeas) (~280 mcg per cup cooked), Avocado (~81 mcg per 100g), Corn (~40 mcg per cup), Seaweed (~18 mcg per 10g dried), Edamame (~480 mcg per cup cooked), Sauerkraut (~12 mcg per 50g), Kimchi (~20 mcg per 50g)
Vitamin B6 supports brain function and focus
Food sources: Salmon (grilled) (~0.9 mg per 100g fillet), Spinach (cooked) (~0.4 mg per cup cooked), Ginkgo nuts (~0.1 mg per 30g), Chestnuts (~0.1 mg per 30g), Pistachios (~0.5 mg per 30g (rich source)), Garlic (~0.1 mg per 9g), Onion (~0.1 mg per 80g), Potatoes (~0.4 mg per medium potato), Purple sweet potatoes (~0.3 mg per medium), Sweet potatoes (~0.3 mg per medium), Yam (~0.2 mg per 100g cooked)
Thiamine supports nerve function and mental clarity
Food sources: Lentils (cooked) (~0.3 mg per cup cooked), Pumpkin seeds (~0.1 mg per 30g serving), Pistachios (~0.2 mg thiamine per 30g), Flax seeds (~0.5 mg thiamine per 30g), Macadamia nuts (~0.3 mg thiamine per 30g), Sunflower seeds (~0.4 mg thiamine per 30g), Corn (~0.3 mg thiamine per cup)
Supplement categories (3)
Omega-3 supplementation supports brain health and may improve focus and concentration
Cautions: Caution at doses >3 g EPA+DHA/day if on anticoagulants; stop 2 weeks before surgery
Supports nervous system function and energy metabolism relevant to focus
Cautions: High-dose B6 above 100 mg/day long-term is linked to nerve symptoms — check the product dose
B12 deficiency can cause brain fog and poor concentration; correct after confirming deficiency
Cautions: Test levels before high-dose supplementation if the underlying cause is unclear
Related symptoms
Educational information only — not medical advice. This content does not diagnose, treat, or replace consultation with a qualified healthcare professional. Always seek professional medical advice for symptoms, supplement use, or health concerns.