I am an 18-year-old male experiencing severe brain fog, extreme physical and mental exhaustion, difficulty with memory recall and simple calculations, and a feeling of unbalance/dizziness while walking. I am also feeling high anxiety due to these symptoms. Please guide me on what could be causing this and which basic blood tests (like
Vitamin B12, D3, CBC,
Thyroid,
Electrolytes) or physical check-ups I should get done immediately.