The emotional stress that causes chest pains and breathlessness can occur in moments of joy as well as anger, grief and fear, a Swiss study suggests.
Three-quarters of cases of takotsubo cardiomyopathy, a change in the shape of the heart's left ventricle, which can be fatal, are caused by stress.
The University Hospital Zurich study, in the European Heart Journal, suggests about one in 20 cases is caused by joy.
The condition is normally temporary and people are generally fine afterwards.





