According to Wikipedia liquorice can cause high blood pressure.
Liquorice
Consumption of liquorice (which can be of potent strength in liquorice candy) can lead to a surge in blood pressure. People with hypertension or history of cardio-vascular disease should avoid liquorice raising their blood pressure to risky levels. Frequently, if liquorice is the cause of the high blood pressure, a low blood level of potassium will also be present.Liquorice extracts are present in many medicines (for example cough syrups, throat lozenges and peptic ulcer treatments).
first I've heard of that.
I don't eat much liquorice, actually it's rare that I'll eat liquorice so I can't blame high blood pressure on that.
Oh well, I'd better keep reading I suppose.
