One study has found that during 2007–9 there was a spike in the rate of heart attacks in London, and this occurred against a backdrop of a decreasing incidence of heart attacks in the rest of the UK. The authors estimate that this surge in heart attacks in London led to an additional two thousand deaths, and resulted, they suggest, from the impact of the credit crisis on the financial district. A market crash may thus produce not only an economic disaster but also a medical one.