Plasma level of catecholamines and lipids when speaking before an audience

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Abstract
Adrenaline and noradrenaline as well as total cholesterol, HDL and LDL cholesterol and triglycerides were determined in 10 male subjects on the day of a public speech as well as on a control day. In the course of the public speech, a major rise of adrenaline and noradrenaline, by the factors of 2.7 and 1.9 respectively, was found. Furthermore, in comparison to the values of the control day, there was a rise in total cholesterol by 14.0 mg/dl as well as in LDL and HDL cholesterol. The triglycerides did not alter appreciably. The results are compatible with the hypothesis of a raised lipid level after acute emotional stress. The lipid mobilizing effect of catecholamines is discussed as a possible cause.