Hello and thank you for asking!
I can understand you concern.
I think he should do some blood tests to rule out pathologies ( underactive thyroid, anemia ect) that cause fatigue at this age:
-CBC (
Complete Blood Count, also known as Hemogram; includes
Hemoglobin, WBC and Platelet counts)
-Electrolytes (Sodium and Potassium in particular)
-HbA1c (Glycosylated Hemoglobin = your last 3 months' glucose average).
-Liver function tests (SGOT , SGPT, Albumin,
Bilirubin,
Alkaline Phosphatase)
-Kidney function tests (BUN,
Creatinine)
-TSH (checks your thyroid)
-Free T4 (this too checks your thyroid)
-25 hydroxy Vitamin D levels (ideal range 40 to 60 ng/ml = 100 to 150 nmol/liter)
-Calcium
None of these tests require any fasting and can be done at any time of the day.
I would be happy to review your performed tests for another professional opinion.
Kind regards,
Dr.Mirjeta