Which blood type in humans live the longest?




A groundbreaking study from Japan suggests that something as simple as your blood type might play a role in longevity. Researchers are uncovering surprising connections between genetics and aging, with blood type B emerging as a potential key to a longer, healthier life. 

 

### **Blood Type B Linked to Longer Lifespan**  

In a study of **269 Tokyo centenarians**, scientists compared their blood types to over **7,000 individuals** from the same region. The results were striking: **blood type B was significantly more common among those who lived past 100.**  

A separate study reinforced these findings by analyzing the **biological age of organs** in **5,000+ participants**. People with blood type B showed **slower signs of aging**, possibly due to **better cell regeneration** and **improved metabolic resilience**—two crucial factors in longevity.  

### **Why Might Blood Type B Offer an Advantage?**  

Blood type B is defined by the presence of **B antigens** on red blood cells and **anti-A antibodies**. This unique immune profile may:  

- **Enhance cellular repair**  
- **Reduce oxidative stress** (a major contributor to aging)  
- **Improve metabolic function**, lowering risks for diabetes and cognitive decline  



### **But It’s Not All Good News**  

While blood type B may support longevity, research also links it to a **slightly higher risk of heart disease**. Experts recommend that individuals with this blood type **prioritize heart-healthy habits**, including:  

✔ A **nutrient-rich diet**  
✔ **Regular exercise**  
✔ **Stress management**  

### **Blood Type and Disease Risk: What Science Reveals**  

Beyond longevity, your blood type may influence your susceptibility to certain diseases:  

#### **1. Pancreatic Cancer Risk**  

- **Types A, AB, and B** have a higher risk due to gut bacteria (*H. pylori*) that thrive on their red blood cell molecules.  




#### **2. Heart Attack & Erectile Dysfunction**  

- **Non-O blood types (A, B, AB)** have a **9% higher heart attack risk** due to stickier blood (higher von Willebrand factor).  

- **Men with these types** may also face **greater erectile dysfunction risk** due to reduced blood flow.  

#### **3. Infections & Immunity**  

- **Type O blood** may offer **protection against severe malaria** (the parasite struggles to bind to O cells).  

- However, **type O individuals** are more vulnerable to **strep infections**, which latch onto their red blood cells more easily.  

### **The Blood Type Diet: Fact or Fad?**  

The **Blood Type Diet**, popularized by Dr. Peter D’Adamo, suggests eating according to your blood type:  

- **Type A ("The Agrarian")** – Plant-based, minimal meat  
- **Type B ("The Nomad")** – Diverse diet (meat, dairy, veggies), avoid wheat & corn  
- **Type AB ("The Enigma")** – Seafood, tofu, greens; avoid caffeine & alcohol  
- **Type O ("The Hunter")** – High-protein (meat, fish), avoid grains & dairy  



While intriguing, **scientific support for this diet remains limited**. Experts emphasize that **balanced nutrition, exercise, and lifestyle choices** matter more than blood type alone.  

### **The Bottom Line**  

Your blood type may subtly influence health and longevity, but **genes are just one piece of the puzzle**. No matter your type, the keys to a long, healthy life remain:  

✅ **Nutritious eating**  
✅ **Regular physical activity**  
✅ **Mental well-being**  

As research evolves, we may uncover more ways our biology shapes our health—but for now, **how you live still makes the biggest difference.**