Navigating legally among claims for prediabetes or blood sugar levels is tricky. Experts discuss what keeps a claim legal and what crosses the line, and spotlight other disease categories that can get firms in trouble if claims are not crafted properly.

Consumer health product firms say the coronavirus will have an impact on their results, but it’s too early to estimate the costs. US FDA also hedges its predictions, saying the outbreak could lead to interruptions in country’s drug and medical device supplies. China's health commission has issued six guidelines for diagnosis and treatment, but no conventional antiviral treatment is approved and it's emphasizing traditional Chinese medicines.