Why can I not focus?
Not a diagnosis: a head start. These are the three drivers most worth checking first, based on what the evidence says gets missed most often.
The biology under attention
Iron (ferritin), omega-3 status and sleep quality measurably move ADHD symptoms. Rarely checked.
Blood sugar and dopamine
Spikes and crashes hit ADHD brains harder. Protein at breakfast is the cheapest experiment.
Diagnosis is not the ceiling
Waitlist or not, the levers above are yours to pull today.
Ferritin (aim well above "normal" floor), B12, vitamin D, thyroid
1. Start a two-minute note so the pattern becomes visible.
2. Take the test list above with you so you can explain the pattern clearly.
3. Read the evidence: Iron Deficiency and Ferritin: Why Normal Can Be Too Low.
Education, not diagnosis, and never a replacement for your GP or pharmacist. Reference ranges and guidance vary; sudden, severe or worsening symptoms need 111, or 999 in an emergency. By Hussain Sharifi · independent, affiliate-free health research.