Effects of a four-week 'free sugar' avoidence on the physical and psychological well-being of dental students. A mixed quantitative and qualitative study.

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

DRKS

Registry ID

DRKS00031765

Enrollment

Registered

2023-04-25

Start date

2023-05-10

Completion date

Unknown

Last updated

2025-04-07

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

K05.1 K05.0 K02.9

Interventions

Group 1: Dental students not consuming free sugars for 4 weeks.

Eligibility

Sex/Gender

All

Age

18 Years to No maximum

Inclusion criteria

Inclusion criteria: - Students of dentistry - Generally healthy - Consuming more than 25 g of "free sugars" per day (determined via RKI-DEGS questionnaire)

Exclusion criteria

Exclusion criteria: - Diabetes mellitus and other diseases affecting the sugar metabolism - Eating disorders

Design outcomes

Primary

Measure	Time frame
Mention of symptoms associated with sugar avoidence. These are queried daily for 4 weeks in a symptom diary according to both suggestions and free entry.	—

Secondary

Measure	Time frame
- Pre-post comparison in the Craving Questionnaire (modified QSU-brief) - Pre-post comparison of nutrients in the food frequency questionnaire (RKI-DEGS questionnaire) - Pre-post comparison BMI - Pre-post comparison oral health and microbiota - Semistructured interviews - Physical activity (medical history) - "Follow-up" question on diet after 3 months	—

Countries

Germany

Contacts

Public ContactJohan Wölber

Klinik für Zahnerhaltungskunde und Parodontologie, Universitätsklinikum Freiburg

johan.woelber@uniklinik-freiburg.de+497612707310

Outcome results

None listed

Source: DRKS (via WHO ICTRP) · Data processed: Feb 4, 2026