Home > Mental health > Brain > Fascinating phenomena 12 May 2019 WATCH: What if our brains were half the size? What if our brains were 50% smaller? 0 Related WATCH: How would human brain transplants change the world? WATCH: What if we used 100% of our brains? FEATURE DOCUMENTARY: What makes a genius? Ask CyberShrink » Talk Heart to heart forum » How brain injury affects you Transparent brains The human brain is packed with 100 billion neurons. It's responsible for everything we do, think and feel. It dictates our emotions, intelligence and overall mental health. But, what if our brains were 50% smaller?Image credit: iStock NEXT ON HEALTH24X Could psychotherapy work for you? 2019-11-19 07:07 More: BrainFascinating phenomena advertisement Other news Medical Coronavirus in SA: All the confirmed cases Medical Latest on Covid-19 testing in SA: Public sector backlogs more than 6 days – an expert tells us more Medical Some countries seeing fewer flu cases due to coronavirus lockdown measures, research shows Medical Covid-19: The plight of gogo Nobude and other old persons living in townships News Doctors blow whistle on medicines crisis in North West Medical Coronavirus morning update: Latest on cigarette ban, more on hotspots, and testing backlogs Live healthier Lifestyle » E-cigarettes: Here are five things to know E-cigarettes have become hugely popular in the past decade, but a rash of vaping-linked deaths and illnesses in the US is feeding caution about a product that's already banned in some places. Allergy » Ditch the itch: Researchers find new drug to fight hives A new drug works by targeting an immune system antibody called immunoglobulin E, which is responsible for the allergic reaction that causes hives.