Effects of processed diets on body weight, calorie intake, and metabolism: A prospective interventional study

Effects of processed diets on body weight, calorie intake, and metabolism: A prospective interventional study - Effects of processed diets on body weight, calorie intake, and metabolism

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000049876

Enrollment

Registered

2022-12-23

Start date

2022-07-20

Completion date

Unknown

Last updated

2026-06-29

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

Conditions

Obesity

Interventions

10 adults were randomized into two groups, 5 adults each. Each group was exposed to ultra-processed and non-ultra-processed diets in random order for 7 days each, after a washout period of two weeks.

Eligibility

Sex/Gender

Male

Inclusion criteria

Inclusion criteria: BMI 25 or over Weight-stable (<+-5% over the past 6 months) Not on regular hospital visits or medication

Exclusion criteria

Exclusion criteria: Those who have diabetes, dyslipidemia, hypertension, thyroid disease, cancer, anemia and eating disorders or other pshychiatric conditions such as depression or bipolar disorder. Those who have food allergies or adherence to particular diets (e.g., vegetarian etc) Any other subjects we considered not suitable for inclusion.

Design outcomes

Primary

Measure	Time frame
Body weight change	—

Secondary

Measure	Time frame
Calorie intake Metabolic markers	—

Countries

Japan

Contacts

Public ContactShoko Hamano

The University of Tokyo Hospital The Department of Diabetes and Metabolic Diseases

hamanos-int@h.u-tokyo.ac.jp03-3815-5411

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026