Meeting a beautiful woman can be bad for your health, scientists have found.

The effects are heightened in men who believe that the woman in question is "out of their league".

Cortisol is produced by the body under physical or psychological stress and has been linked to heart disease.

Researchers tested 84 male students by asking each one to sit in a room and solve a sudoku puzzle. Two strangers, one male and one female, were also in the room.

When the female stranger left the room and the two men remained sitting together, the volunteer's stress levels did not rise. However, when the volunteer was left alone with the female stranger, his cortisol levels rose.

The researchers concluded: "In this study we considered that for most men the presence of an attractive woman may induce the perception that there is an opportunity for courtship.

"While some men might avoid attractive women since they think they are 'out of their league', the majority would respond with apprehension and a concurrent  hormonal response.

"This study showed that male cortisol levels increased after exposure to a five-minute short social contact with a young, attractive woman."

Cortisol can have a positive effect in small doses, improving alertness and well-being. However, chronically elevated cortisol levels can worsen medical conditions such as heart disease, diabetes, hypertension and impotency.

out of one's league:对某人而言，超出能力、范围等

cortisol:皮质醇

sudoku puzzle:数独

courtship:求爱

concurrent:同时发生的

hormonal response：荷尔蒙反应

hypertension:高血压

impotency: 性无能

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