Feeling of fainting when i have not eaten for a few hours + other symptoms

Hi,

I (34 M, White, 5’9, 170 lbs, Germany) have the following symptoms for a few months now:

  • Feeling unwell with the feeling of fainting and sweaty hands when i have not eaten in a few hours or on empty stomach (Feels Like a big hole in the stomach after waking up in the morning for example)
  • Feeling weak and tired
  • Decreased sports performance
  • Weight loss although eating enough (tracked via App)
  • Tingling/burning mouth and tounge

What was tested by now:

  • Blood Work
  • Gastroscopy

→ Results were normal.

Do you have any idea what could cause my problems? It really is starting to mess with my head :frowning:

Thx.