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The blood type system (A/B/O) classifies types A, B, O, and AB based on antigens on the surface of red blood cells; however, the true ancestral type of humanity is not the most common O type, but the A type. Although Type O is the youngest sibling, having emerged with a single letter malfunction in the A gene, it accounts for nearly half of today's human population. It is commonly said that "the first humans were Type O," but that common belief was actually reversed. We unfold the true genealogy of blood types, starting from the ABO gene shared with chimpanzees and gorillas about 20 million years ago, where Type B branched off from Type A and Type O emerged from the malfunction. And why did the malfunctioning Type O come to make up half of humanity from the perfectly normal Type A? The culprit was not a conqueror wielding a sword, but a single mosquito—malaria. While Type O was resistant to severe malaria, it was precisely because of that characteristic that it was the first to succumb to cholera. No single blood type is resistant to all diseases, so nature left behind various types; the Founder Effect and human migration resulted in the distribution of Type O in America, Type A in Europe, and the even distribution in Korea. Examining the truth behind personality theories that began with school teacher Furukawa observing just 11 family members and acquaintances in 1927, the Cis-AB type unique to Korea and Japan and misunderstandings regarding paternity, the Rh- alien theory, and even the COVID-19 pandemic of 2020, we trace the fact that your blood is essentially a receipt for your ancestors' survival within approximately 32 minutes. ⏱️ Timestamps 0:00 Can you judge personality by blood type? Backwards from the beginning 1:46 The true ancestor is Type A — The reversed blood type genealogy 2:30 Chimpanzees have the same blood type — A legacy from 20 million years ago 3:55 What is a blood type — Red blood cell identification tags, antigens 5:00 Incorrectly administered blood kills people — Hemolysis 5:54 Landsteiner discovers ABO in 1901 6:45 The culprit is the mosquito — Type O and malaria 7:48 Why is Type O resistant to malaria (Risk 66% lower) 9:44 The most disadvantageous blood type is Type AB 10:19 The true size of malaria — 590,000 cases a year 12:59 Type O's fatal weakness, cholera (8 times higher hospitalizations) 14:44 Balanced polymorphism — No blood is resistant to every disease 15:53 ​​World map of blood types — The founder effect and Korea 18:15 The Iranian plateau — The incubator of human genetics, where distribution is split Stage 19:53 The Blood Type Personality Theory is a Superstition — Furukawa and Nomi 22:47 The Truth Behind the Rh- Alien Theory and the Rhogam Injection 25:42 Cis-AB Types in Korea and Japan — Mendel's Laws and Paternity Misunderstandings 26:27 COVID-19, Blood Types, and the Oldest Survival Insurance #BloodType #BloodTypePersonality #Malaria #Evolution #ScienceDocumentary ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 📜 History Log — A channel introducing records of historical events and the lives of historical figures 🔔 Subscribing and liking are a great help in producing the next video! Thank you for watching. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━