RecruitingNot ApplicableNCT07133529

Decision-making and Food Intake

Decision-making and Food Intake ("Buffet Study")


Sponsor

German Institute of Human Nutrition

Enrollment

45 participants

Start Date

Aug 4, 2025

Study Type

INTERVENTIONAL

Conditions

Summary

The study will investigate how the expectation of food availability impacts the response to food cues, mood, interoceptive awareness, and consumption of food intake in healthy, naturally cycling women.


Eligibility

Sex: FEMALEMin Age: 18 YearsMax Age: 35 Years

Inclusion Criteria5

  • Nulliparous women (age: 18-35 years) with a regular menstrual cycle (25-32 days)
  • Legally competent/Consent to participate
  • Language proficiency in German (native speaker, fluent)
  • Physically and mentally healthy
  • Body mass index (BMI) of 18.5 - 30 kg/m2

Exclusion Criteria23

  • Current or use of hormonal contraceptives in the previous 6 months
  • Current use of hormonal intra-uterine devices (IUDs)
  • Previous or current pregnancy
  • Diagnosed psychological or metabolic disorder
  • Former or current illnesses of:
  • Brain or mind (including anxiety disorders, depression, eating disorders, personality disorders, alcohol, drugs or drug or non-substance dependence, neurological disorders other than occasional headache, psychiatric or neurological abnomalities)
  • Heart or blood circulation/cardiovascular disease (myocardial infarction, stroke, hypertension, hypotension, having a pacemaker)
  • Gastro-intestinal disorders (e.g. colon diseases, irritable bowel syndrome, Crohn's disease)
  • Endocrine disorders (e.g. thyroid disorders)
  • Other serious past or present medical conditions (for example, metabolic syndrome, diabetes)
  • Other serious health problems or current severe mental or physical stress.
  • Blood clotting disorder
  • Fear of drawing blood
  • Severe anemia
  • Previously diagnosed hypoglycemia episodes
  • Regular intake of medication (e.g. Antidepressant/anti-anxiety medication)
  • Blood donation within 4 weeks before the study appointment
  • Intake of anticoagulant medications
  • illegal drug consumption
  • smoking or nicotine consumption
  • extreme athletes
  • vegetarians or vegans or any other dietary restrictions due to allergies or intolerances
  • shift workers

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Interventions

BEHAVIORALPerceived food uncertainty

Participants remain unaware of both the scheduled time and the length of the next meal.

BEHAVIORALPerceived food certainty

Participants are aware of both the scheduled time and the length of the next meal.


Locations(1)

German Institute of Human Nutrition Potsdam-Rehbruecke

Nuthetal, Brandenburg, Germany

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NCT07133529


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