Why am I so anxious?
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.
Caffeine and blood sugar
Both mimic and amplify anxiety. The 11am and 4pm waves are often chemistry, not psychology.
The gut-brain axis
Gut inflammation talks to the brain via the vagus nerve. Gut symptoms plus anxiety is one system, not two.
Thyroid and iron
An overactive thyroid feels exactly like anxiety. Low iron worsens it.
TSH, ferritin, HbA1c; review caffeine honestly first
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: The Gut-Anxiety Connection: Why Your Mental Health Might Start · Your Gut Is Talking to Your Brain: The Autism-Microbiome Connection That Changes Everything · The Gut-Brain Axis: How Your Gut and Brain Really Talk.
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.