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Blood Type In Business

Posted by Confessions of the Professions in Articles

Matthew Gates


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What Your Blood Type Says About Your Career Choice

Your Blood Type says a lot about you when it comes to business. While no blood type truly determines how a person will act, behave, or their leadership style in the workplace, there are companies, specifically in Japan that give blood tests in order to determine the blood type of a person to see which roles they best fit. There are currently four different types of classified human blood types, each with its own unique characteristics. Blood Type A, Blood Type B, Blood Type AB, and Blood Type O. Blood Type is often used to determine who who can receive or give blood. Certain blood types cannot mix while others are more rare. It gets even more complicated when you factor in the fact that there is O Positive, O Negative, A Positive, A Negative, B Positive, B Negative, AB Positive, and AB Negative. I am not a specialist in blood and this article is not going to cover who can donate blood to who, but rather determine what your specific blood type says about you and what jobs you might be best suited to work.


The most common blood type. O’s enjoy power – and aren’t shy about attempting to seize it. Very competitive, they are the pit bulls of the business world, making excellent, if not sometimes dogmatic, bosses – better at making money than friends.

Best O Jobs:

Warnings for Type O:

The legacy of your Type O ancestry causes an immediate “fight or flight” response in people of this blood type. However, this finely tuned response to stress, so vital in early Type O’s, is not always so beneficial in modern times. The Type O response can cause bouts of excessive anger, temper tantrums, hyperactivity and even create a severe enough chemical imbalance to bring about a manic episode. Since there is a powerful, synergistic relationship between the release of dopamine and feelings of reward, Type O is more vulnerable to destructive behaviors when overly tired, depressed or bored. These can include gambling, sensation seeking, risk taking, substance abuse and impulsivity.

Key Lifestyle Strategies:

Some O’s of note include Ronald Reagan and Queen Elizabeth


Persistent, reliable and methodical type. A’s are order-oriented and don’t like surprises. They are best suited for “detail” jobs, but not those requiring creative thinking. Good team players, but poor management material.

Best A Jobs:

Warnings for Type A to avoid:

Key Lifestyle Strategies:

Some A’s of note are Jimmy Carter and Alan Alda.


These unconventional free spirits are highly creative, honest and hard-working employees – but their inability to delegate and their lack of shyness in “calling ‘em as they see ‘em” prohibits them from climbing to the top in any traditional corporate settings. What they lack in diplomacy, they more than make up for in ideas, energy and the ability to get things done.

Best B Jobs:

Warning for Type B:

When it comes to hormones, type B is closer to type A, producing somewhat higher levels of cortisol. When a Type B is out of balance, this manifests in overreaction to stress, difficulty in recovering from stress, disrupted sleep patterns, daytime brain fog, disruptive to GI friendly bacteria and suppresses immune function. This leads to increased risks for depression, insulin resistance, hypothyroidism and high stress can further exacerbate virtually all health challenges.

Key Lifestyle Strategies:

Some famous B’s are Tom Selleck, Mia Farrow and Jack Nicholson


The rarest of blood types, AB’s are the most spiritual of the blood types – and include many fortune tellers, clairvoyants and faith-healers. In more traditional jobs, their coolness of character and rational thinking makes them good strategic planners, diplomats and attorneys. Very organized but not particularly innovative or creative, they make good department managers, bureaucrats and negotiators.

Best AB Jobs:

Warnings for Type AB:

When it comes to stress hormones, you most resemble Type O in your tendency to overproduce catecholamines like adrenaline. Yet you also have the additional complexity of Type B’s rapid clearing of nitrous oxide, so you suffer the physical consequences of high emotions. Your greatest danger is the tendency to internalize your emotions, especially anger and hostility, which is much more damaging to your health than externalizing it. Exercise plays a critical component in stress reduction and maintaining a healthy emotional balance for Type AB.

Key Lifestyle Strategies:

John F. Kennedy was an AB


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