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   6 Ways Blood Type Can Influence Personal Health: From Mild Stress To Cancer   
      
      
      
   Sep 24, 2014 08:00 AM By Chris Weller@chriswweller   
   blood   
      
      
   The antigens living on the surface of your red blood cells can determine a lot   
   more than just who you can donate to. Kenny Holston, CC BY-ND 2.0   
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   Blood type is one of the body's more mysterious taxonomies. There are four   
   bins our blood call fall into -- A, B, AB, and O -- and together they   
   represent the four groups of antigens found on the surfaces of red blood   
   cells. But they don' t just signal    
   who we can donate to and receive from; our blood types can reveal complex   
   patterns of personal health. Here are six to consider:   
      
   1. Memory Problems   
      
   At-risk: AB   
      
   Your brain and vascular system have more in common than you may think. A   
   recent study found people with type AB blood were 82 percent more likely to   
   experience difficulties with memory recall, language, and attention than   
   people with other types. One    
   reason, researchers suspect, is due to the key clotting protein, known as   
   coagulation factor VIII, which may actually reduce the quality of blood flow   
   to the brain, rather than sealing up injury sites.   
      
   "Since factor VIII levels are closely linked to blood type, this may be one   
   causal connection between blood type and cognitive impairment," said Mary   
   Cushman, author of the recent study, to Yahoo Health.   
      
   2. Pancreatic Cancer   
      
   At-risk: Non-O   
      
   It may be more accurate to say people with type O blood are at a lower risk   
   for pancreatic cancer, given the work researchers from Yale University are   
   doing on bacterial infection. In a study conducted last July, scientists from   
   the University's Cancer    
   Center looked at cases of a common species of bacteria called Helicobacter   
   pylori, or H. pylori, that lives in people's gut.   
      
   They found people with H. pylori were significantly more likely to develop   
   pancreatic cancer, due to the way A and B antigens help the bacteria thrive.   
   People with type O blood carry no antigens on the surface of their red blood   
   cells. This is what    
   allows them to donate to anyone.   
      
   3. Heart Disease   
      
   At-risk: AB   
      
   A 2012 study from Harvard University found people with non-O blood also happen   
   to have an increased risk for cardiovascular disease. But those with type AB   
   blood were the most at-risk overall, demonstrating a 23 percent greater chance   
   of suffering from    
   heart disease than type O subjects.   
      
   Study author Dr. Lu Qi, an assistant professor in the Department of Nutrition,   
   said the particular makeup of people's antigens should be given the same   
   weight we already assign to cholesterol and blood pressure. "While people   
   cannot change their blood    
   type, our findings may help physicians better understand who is at risk for   
   developing heart disease," Qi said in a statement.   
      
   4. Stress   
      
   At-risk: A   
      
   Because certain blood types are more likely to co-occur with varying levels of   
   hormones in the body, physicians commonly tailor their exercise    
   ecommendations to the patient's type. People with type A blood, for example,   
   are more likely to have higher    
   levels of cortisol, the stress hormone, in their body. So, stress-reducing   
   exercises, like Tai Chi and yoga, may be more beneficial at cutting that   
   tension than running or weightlifting alone.   
      
   When the adrenal gland dumps more and more cortisol into the blood, people's   
   stress response grows more acute. People with type A blood may find themselves   
   getting anxious more quickly and having a harder time letting troubles roll   
   off their back.   
      
   5. Exercise Demands   
      
   More generally, the makeup of a person's antigens on his or her red blood   
   cells can determine how much of a certain hormone gets released. People with   
   type A and B blood respond better to calming, low-intensity exercise like   
   yoga, especially if    
   depression runs in the family. Likewise, people with AB blood benefit from   
   well-rounded workouts that keep their immune systems in check. Type O people,   
   however, are a different story.   
      
   "Type O's are more prone to problems that arise from an inability to clear   
   stress hormones from their system quickly," Dr. Ginger Nash, a naturopathic   
   physician, told Personalized Living. "It takes more to get a Type O stressed   
   but it takes more to de-   
   stress them as well."   
      
   6. Gut Bacteria   
      
   In addition to living on your red blood cells, antigens are often found in the   
   lining of your digestive tract -- about 80 percent of people fall into this   
   category. Much of the bacteria living in people's gut uses these antigens as   
   food, which largely    
   determines which bacteria flourish and which disappear. Prior research has   
   estimated, for instance, that people with type B blood contain up to 50,000   
   times the number of strains of friendly bacteria than people with either type   
   A or O blood.   
      
   "Increasingly, studies are showing that changes in the microflora content of   
   the digestive tract can be linked to metabolic illnesses, including type II   
   (adult onset) diabetes and obesity," wrote Dr. Peter D'Adamo, physician and   
   author of Eat Right 4    
   Your Type, in a blog post. "Blood group and secretor status play an important   
   role in conditioning the overall characteristics of the digestive tract."   
      
      
   http://www.medicaldaily.com/6-ways-blood-type-can-influence-pers   
   nal-health-mild-stress-cancer-304518   
      
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