The Relationship Between Olfactory and Gustatory Senses, Hedonic Hunger, and Diet Quality After Bariatric Surgery
概览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- Hanife Köksal
- 入组人数
- 101
- 试验地点
- 1
- 主要终点
- Power of Food Scale (PFS) Score
概览
简要总结
This cross-sectional observational study investigates the association between changes in olfactory and gustatory senses and hedonic hunger among individuals who have undergone bariatric surgery. The study also examines the effects of these sensory changes on diet quality and anthropometric measurements. Participants completed a structured questionnaire including sociodemographic and health information, dietary habits, a modified 33-item taste and smell assessment, the Power of Food Scale (PFS), the Mediterranean Diet Adherence Screener (MEDAS), the International Physical Activity Questionnaire (IPAQ), and anthropometric measurements.
详细描述
Obesity is a chronic, multifactorial disease that negatively impacts health and quality of life. Bariatric surgery is an effective treatment option for severe obesity, leading to significant and sustained weight loss as well as improvement in obesity-related comorbidities.
Postoperative changes in taste and smell perception are frequently reported by bariatric patients and may influence food preferences, hedonic hunger, and overall diet quality. These sensory alterations can result from anatomical and hormonal changes after surgery, including altered gut hormone secretion (e.g., PYY, GLP-1, ghrelin) and bile acid metabolism, which affect appetite regulation and reward pathways.
This cross-sectional observational study evaluated adults aged 18-65 years who had undergone sleeve gastrectomy (SG) or Roux-en-Y gastric bypass (RYGB) at least three months prior to enrollment. Data collection included sociodemographic and health information, dietary habits, a modified 33-item taste and smell questionnaire, the Power of Food Scale (PFS) to assess hedonic hunger, the Mediterranean Diet Adherence Screener (MEDAS), the International Physical Activity Questionnaire (IPAQ), and anthropometric measurements. Nutrient intakes were analyzed according to the Türkiye Nutrition Guide (TÜBER-2022) reference values.
The primary objective was to determine the relationship between postoperative taste/smell changes and hedonic hunger. Secondary objectives included assessing the association between sensory perception and Mediterranean diet adherence, anthropometric parameters, and nutrient adequacy by surgery type. Findings from this study may guide the development of personalized nutritional follow-up protocols to improve long-term outcomes in bariatric patients.
研究设计
- 研究类型
- Observational
- 观察模型
- Cohort
- 时间视角
- Retrospective
入排标准
- 年龄范围
- 18 Years 至 65 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Adults aged 18 to 65 years
- •History of bariatric surgery (Sleeve Gastrectomy or Roux-en-Y Gastric Bypass)
- •At least 3 months post-surgery at the time of study enrollment
- •Able and willing to provide informed consent
排除标准
- •Pregnancy
- •History of neurological disorders affecting taste or smell
- •Active upper respiratory infection at the time of assessment
- •Severe psychiatric disorders that may impair participation
结局指标
主要结局
Power of Food Scale (PFS) Score
时间窗: Baseline (Day 1, at study enrollment)
Hedonic hunger assessed using the Power of Food Scale (range: 1-5; higher scores indicate greater hedonic hunger).
Modified 33-item Taste and Smell Questionnaire Score
时间窗: Baseline (≥3 months after bariatric surgery, at study enrollment)
Changes in taste and smell perception assessed using a modified 33-item questionnaire (range: 0-33; higher scores indicate more pronounced sensory changes).
次要结局
- Mediterranean Diet Adherence Screener (MEDAS) Score(Baseline (≥3 months after bariatric surgery, at study enrollment))
- Body Mass Index (BMI)(Baseline (Day 1, at study enrollment))
- Waist-to-Hip Ratio (WHR)(Baseline (Day 1, at study enrollment))
- Energy Intake Adequacy (% of TÜBER-2022 reference)(Baseline (Day 1, at study enrollment))
- Protein Intake Adequacy (% of TÜBER-2022 reference)(Baseline (Day 1, at study enrollment))
- Micronutrient Intake Adequacy (e.g., iron, folate, vitamin E; % of TÜBER-2022 reference)(Baseline (Day 1, at study enrollment))
- Nutrient Adequacy Score (based on TÜBER-2022 reference values)(Baseline (Day 1, at study enrollment))
研究者
Hanife Köksal
Registered dietitians
Istanbul University