Latest health research news including possible aids against melanoma, breast cancer, hepatic encephalopathy, oral cancer and metabolic syndrome; a new food source for vitamin D that works as well as supplements; a common food associated with a higher risk of prostate cancer; the best way to stem teenage smoking; a way of possibly increasing the effectiveness of tamoxifen; parents' contribution to victims of bullying; diet, colon cancer and rectal cancer; when not to give children cough medicine; a habit that increases the risk of rheumatoid arthritis; alternative therapies for high blood pressure; fruits that help clear toxic proteins from the brain and may assist in diseases such as Alzheimers and Parkinson's; a simple food that may help reduce gut pathogens; a potent weapon against obesity; fighting NASH; testosterone may not regulate women's libidos; a possible counter for liver fibrosis; and other studies.