Posted inDr. Roach

The effectiveness of vaccines is complicated

Dear Dr. Roach: I was wondering if you could explain why some vaccinations seem to completely protect against a disease, while others do not. For example, smallpox was completely eradicated by vaccination, and the hepatitis B vaccine is good for life and 98% to 100% effective, according to the World Health Organization. Yet we need […]

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Posted inDr. Roach

To replace hormones or not

Dear Dr. Roach: I need some guidance on the use of estradiol. I have been taking a low dose (1 mg) for the past 15 years, following a hysterectomy and oophorectomy. My doctor said I needed it to provide the estrogen once provided by my ovaries that he had just removed. At the time I […]

Posted inDr. Roach

Definitive therapy reasonable for this patient

Dear Dr. Roach: What is the endgame of hyperthyroidism? I am a 54-year-old female, diagnosed in September 2020 with hyperthyroidism due to Graves’ disease. My endocrinologist started me on 10 mg of methimazole and 100 mg of metoprolol daily (my heart rate was above 100 beats per minute). I have bloodwork done quarterly. My thyroid-related […]