1. Pfizer said it will acquire cancer drugmaker Medivation for $14 billion. The biopharmaceutical company markets prostate-cancer treatment Xtandi and is developing two experimental drugs for breast cancer and lymphoma. (Reuters)

2. Valeant Pharmaceuticals hired former animal health executive Paul Herendeen as its new chief financial officer. He replaces Robert Rosiello, who has been named the head of corporate development and strategy. (WSJ)

3. Apple acquired personal health data platform Gliimpse earlier this year, the Silicon Valley-based startup confirmed to Fast Company. Gliimpse users can collect, personalize, and share images of their health data. (Fast Company)

4. Researchers developed a machine that has a 70% success rate of diagnosing mental illnesses by examining Instagram photos. People who used filters and posted grayer, darker colored photos were more likely to have depression compared to those who posted more vibrant photos. (Tech Times)

5. Hospitals in China will struggle to meet the demands of its aging population, in part because patients tend to visit hospitals instead of family doctors for minor ailments, leading to long lines, short consultation times, and difficult booking systems, the World Health Organization said. (Fortune)