30 Mar 2020 --- A plant-based diet could help prevent and manage asthma, while dairy products and high-fat foods raise the risk. That is according to a new study review published in the online journal Nutrition Reviews. Study author Dr. Hana Kahleova says the research “offers hope that dietary changes could be helpful,” and a plant-based diet is beneficial because it has been shown to reduce systemic inflammation, which can exacerbate asthma.