For the roughly 150,000 AIDS patients who come down with a life-threatening infection called fungal meningitis each year, there's only one treatment: a drug called fluconazole that works for less than half of patients. Now, a study suggests there may be a way to improve the odds—simply by changing what patients eat. In animal tests, the researchers found that taking fluconazole in combination with a low-carb, high-fat keto diet worked significantly better at killing the fungus than taking the medication alone. For the new study, the researchers wondered if a keto diet—which deprives the body of glucose by cutting carbohydrate...