Briefly, you are talking about the 230 being systolic (the number on top)?Also, what is a little high on his thyroid? He should be shooting for a TSH of 2.5 to avoid
depression. To lower his blood pressure, please have him follow the
DASH diet, the diet recommended by ACC for
high blood pressure. Yes, a blood pressure this high is dangerous and he should see a doctor as they will probably want to start him on a
diuretic first. But lowering the sodium in his diet as the DASH diet emphasizes, will also help with any elevated lipids if he has them. The stress should be dealt with in a positive manner. Have him take a 30 minute walk every day. I believe in
meditation, but I don't know how your uncle would take it. Take him to the doctor, download the diet from the internet, get him on his walking program and speak to him about his blood pressure and how it puts him at risk for a stroke and emphasize the importance of positive grieving and stress control.
Good luck to you all and I am here for followup questions!