* Cortisol (stress hormone) levels
* Nervous system activation
* Inflammatory markers
For example:
* Some studies suggest Type A individuals may experience stronger stress responses
* Type O individuals may recover from stress more quickly—but also experience sharper adrenaline spikes
### Practical Implications
Understanding your stress tendencies can help you:
* Choose better coping strategies
* Prioritize sleep and relaxation
* Recognize early burnout signals
**Takeaway:**
Blood type may influence stress patterns, but emotional intelligence and self-care matter more.
## Hidden Clue #5: Blood Type and Blood Clotting
Blood clotting is one of the clearest biological differences among blood types.
### What’s Known
* Type O blood generally has lower levels of certain clotting factors
* Non-O blood types tend to have higher clotting protein levels
This can influence:
* Bleeding tendencies
* Risk of clot-related conditions (slightly)
