The Rh Negative Blog

Higher cortisol levels in blood type A responsible for stress

As previously shown on this blog, this affects all areas of life including insomnia, hysteria and a tendency to avoid situations and confrontations contributing to such conditions.

Type A, with their naturally higher levels of cortisol, are particularly prone to problems from “everyday” stress.

It is now proven, that people with blood type A are much more affected by everyday stress.

However:

We also seem to recover from it faster.

Past research has associated ABO blood type and mental stress with cardiovascular risk. We studied the effects of blood type (A vs. O) coupled with a mirror drawing stressor on very low density lipoprotein toxicity-preventing activity (TxPA) and plasma cortisol levels. Exposure to the stressor significantly decreased TxPA and increased cortisol for the total group of 25 older adult males. However, the stress response patterns of the 15 blood type A males were different from those of the 10 type O subjects. The blood type A group had higher initial levels of TxPA and cortisol as well as quicker stress recovery rates than the type O group. ABO blood type may be an important behavioral hematologic variable to assess in studies concerning biochemical stress response or cardiovascular risk.

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