Psychosocial stress leads to altered neuroendocrine functions, such as serotonergic dysfunction, as well as alterations of the autonomic nervous system and the hypothalamic-pituitary-adrenal (HPA) axis activity resulting in an imbalance between inhibitory and excitatory neurotransmitters. Clinical consequences include, inter alia, neurovegetative disorders, higher resting heart rate, hypertension, depressive symptoms, sleep disturbances, irregular body-weight changes, and insulin resistance. Poor dietary intake of the essential amino acid L-tryptophane as a precursor to 5-hydroxytryptamine (HT, serotonin) increases sensitivity to stress. It is therefore the investigators hypothesis that daily oral administration of an amino acid mixture (dosage 3.8 g/day) with micronutrients specifically designed to decrease neurovegetative disorders will target these neuroendocrine and metabolic alterations in adults with psychosocial stress. The principal endpoints will be a decrease in points in the psychological-neurological questionnaire (PNF).
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
Enrollment
80
Amino acid composition with micronutrients, once a day (in the evening, 2 hours after dinner) content of a sachet mixed with 200 ml water. Duration: 12 weeks
Placebo; once a day (in the evening, 2 hours after dinner) content of a sachet mixed with 200 ml water. Placebo contains no amino acids and micronutrients and is identical in appearance and solution properties. Duration: 12 weeks
Cardiological Outpatient Practice Elke Parsi, MD
Berlin, State of Berlin, Germany
Psychological neurological questionnaire (PNF)
Pre-post intervention changes in total number of points PNF
Time frame: 12-week dietary intervention
Psychological neurological questionnaire (PNF)
Pre-post improvement in total number of points from the psychological-neurological questionnaire (PNF) about 10 Points or more
Time frame: 12-week dietary intervention
Salivary cortisol concentration (30 minutes after waking in the morning)
Absolute difference between cortisol concentration at baseline and 12 weeks
Time frame: 12-week dietary intervention
Salivary cortisol concentration (in the evening between 8 and 10 pm, 2 hours after dinner)
Absolute difference between cortisol concentration at baseline and 12 weeks
Time frame: 12-week dietary intervention
Serotonin concentration in blood
Absolute difference between serotonin concentration at baseline and 12 weeks
Time frame: 12-week dietary intervention
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