A complete picture of the phenomenon across Europe is elusive, as some countries lag in reporting statistics and coroners are loath to classify deaths as suicides, to protect surviving family members. But it is clear that countries on the front line of the economic crisis are suffering the worst, and that suicides among men have increased the most.

In Greece, the suicide rate among men increased more than 24 percent from 2007 to 2009, government statistics show. In Ireland during the same period, suicides among men rose more than 16 percent. In Italy, suicides motivated by economic difficulties have increased 52 percent, to 187 in 2010 — the most recent year for which statistics were available — from 123 in 2005.

Researchers say the trend has intensified this year as government austerity measures took hold and compounded the hardships for many. While suicides often have many complex causes, researchers have found that severe economic stress corresponds to higher suicide rates.

“Financial crisis puts the lives of ordinary people at risk, but much more dangerous is when there are radical cuts to social protection,” said David Stuckler, a sociologist at the University of Cambridge, who led a study published in The Lancet that found a sharp rise in suicides across Europe, particularly in seriously affected countries like Greece and Ireland from 2007 to 2009, years that coincided with the downturn.

“Austerity can turn a crisis into an epidemic,” Mr. Stuckler added.

Veneto, a region that was the engine of Italy’s economic growth in the 1990s, has been especially hard hit. In this part of the country, which includes the cities of Treviso, Vicenza and Padua, more than 30 small-business people have committed suicide in the last three years for reasons tied to their work as the area has been whipsawed by global trends including a drop in industrial orders, competition from China and tight bank credit.