Help! After rounds of antibiotics and a subsequent yeast infection, my son is now plagued by skin lesions and boils; My calf has been twitching for one solid week! When will it stop?; What is your opinion of the new shingles vaccine, Shingrix?; My father has Parkinson's disease for 13 years. Are there any specific blood tests you would recommend?; My blood tests show increasingly higher B12 and folate levels. Should I be concerned?; I'm being treated for mild hypertension with lisinopril. Are there any supplements you would recommend?