Privatpraxis Prof. Karl-Michael Derwahl Internist - Endokrinologe - Diabetologe - Gesundheits-Check up
Privatpraxis  Prof. Karl-Michael Derwahl  Internist - Endokrinologe - Diabetologe -  Gesundheits-Check up

To our English speaking patients our private practise

Endocrinology and diabetology:

In our private practise patients with private insurances and self-paying patients with endocrine disorders and diabetes mellitus are diagnosed and treated. Welcome !


General internal medicine:

Medical examinations including ultrasound of abdomen (stomach organs), of thyroid, of neck vessels (carotid ateries) and of leg arteries, ECG, 24hrs blood pressure test and pulmonary function test, are performed and diseases are treated.


Please, note:

Due to the increasing requests for appointments lately, short-term appointments are only possible in urgent cases!


Call     (030) 2809-7994  


A Russian attack on a nuclear power plant in Ukraine has resulted in a fire at the site. The reactor itself was not hit and there was no release of radioactivity. Since then, I have been asked almost daily whether it makes sense to take iodine tablets prophylactically.

The background to this is the reactor accident in Chernobyl, which resulted in the release of radioactive iodine and, as a consequence,in particular children and young people developed thyroid cancer. By taking high doses of iodine tablets, the iodine transporter of the thyroid gland can be blocked. Compared to iodine therapy of thyroid disease with iodide or thyroid hormone plus iodide tablets, the necessary iodine dose is 500-1000 times higher - instead of micrograms, milligrams are needed.

The Federal Office for Radiation Protection recommends such iodine blockade only for children, adolescents, pregnant women and adults up to the age of 45. Preventive intake is not advisable. Only in the case of a confirmed release of radioactivity should the thyroid gland be blocked by taking high doses of iodide. More details on individual thyroid diseases will be given in the next article. 




In HASHIMOTO-THYREOIDITIS excessive iodine intake can cause activation of the disease and further destruction of the thyroid gland .
In the case of GRAVES`DISEASE, there may be a considerable worsening of the clinical picture with severe hyperthyroidism, which can hardly be stopped with medication. In extreme cases, a life-threatening hyperfunction, a thyrotoxic crisis, can develop, with severe cardiac arrhythmias, high temperature, dehydration, loss of consciousness and even coma. Only emergency surgery can then be save.
Many patients ask for Lugol's solution, a high-dose iodine solution that is occasionally administered immediately before Graves' surgery to block the thyroid. However, it is not suitable as an iodine blocker after reactor accident in Graves' disease.
High doses of iodine can also cause severe hyperthyroidism in patients with thyroid nodules, especially autonomous nodular goiter. This can lead to life-threatening cardiac arrhythmias, especially in older people. In summary, we can only warn against the independent use of high-dose iodine preparations in thyroid diseases.



Prof Dr. med.

K.-M. Derwahl

Internist, Endokrinologe und Diabetologe

Gethsemanestr 6
10437 Berlin-Prenzlauer Berg

Oder rufen Sie einfach an unter:

 030 28097994 030 28097994


Was ist Endokrinologie?