Brian Johnson, 48, known online as the Liver King, was arrested this week after launching into a manic tirade on Instagram. After Johnson posted dozens of disturbing videos about fighting Joe Rogan, experts are sounding the alarm over what may have contributed to his recent erratic behavior. 'Eating undercooked or raw meat raises the risk of exposure to harmful bacteria and parasites,' said Maura Fowler, a Florida-based dietitian and public health expert. Read the full story on DailyMail.com. 📷 Getty Images, liverking/IG #joerogan #liverking #viral #news