Key legal question
Whether the insured proved a legally relevant deterioration in health justifying an increase from a half to a full disability pension.
Extracted holding
No legally relevant worsening since December 2005 was proven; the existing half pension remained unchanged.
Extracted reasoning
The decisive medical evidence was the expert report of the Medical Center Y. and its addendum. The treating physician’s brief reports did not outweigh it, especially given the special trust relationship of a family doctor. Additional examinations were not required.