Summary: Dr Mark Porter and regular contributor GP Dr Margaret McCartney explore the incidence of HIV in the UK today and why a new home-testing kit in the States is a bad idea. New research shows that Vitamin D alongside antibiotics assists in treating TB. Why a growing number of people believe deficienty in B12 is underdiagnosed and undertreated. And what can be done to help people plagued with recurrent attacks of mouth ulcers.
