Beslenme ve Diyetetik Bölümü Koleksiyonu

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    Conversion Bariatric Surgery, Ketogenic Diet, and Intermittent Fasting in Bariatric Surgery Patients with Recurrent Weight Gain: a Prospective Randomized Controlled Trial
    (Springer, 2026-04) Şen, Seher; Erdem, Nihal Zekiye; Durak, Doğukan; 409851
    Background Recurrent weight gain (RWG) after metabolic and bariatric surgery (MBS) increases the need for alternative treatment strategies. This study evaluated the effects of conversion bariatric surgery (CBS), very low-calorie ketogenic diet (VLCKD), and time-restricted intermittent fasting (TRIF) on anthropometric measurements, biochemical parameters, and dietary habits in patients who experienced suboptimal clinical response (SCR) or RWG after bariatric surgery. Methods This study included 56 patients, allocated to four groups (CBS, VLCKD, TRIF, and control; n = 14 each). Weight, waist-hip measurements, body composition, glycemic/lipid profile, and serum levels of specific vitamins and minerals were assessed at baseline and at week 6. Energy and nutrient intakes were calculated using BeBiS-9. Results Data were analyzed with SPSS 22.0. The percentages of total and excess weight loss differed significantly among the groups (p < 0.001), with CBS (9.07–28.5%), VLCKD (9.12–31.85%), TRIF (5.09–14.97%), and control (0.97–3.40%). Additionally, the pre- and post-intervention differences in fasting insulin, HOMA-IR, HbA1c, cholesterol, LDL-C, triglyceride, and uric acid levels varied significantly among the groups. VLCKD showed a more prominent effect on glycemic parameters, whereas CBS had a more beneficial impact on the lipid profile. In intervention groups, daily energy, carbohydrate and fat intake (g/day) decreased; protein percentages increased; the frequency of consumption of energy-dense foods decreased; and healthy food preferences increased. Conclusions Consequently, clinically significant improvements in weight management and metabolic parameters were observed in CBS, VLCKD, and TRIF groups under multidisciplinary team follow-up. These findings suggest that dietitian-led VLCKD and TRIF interventions may be considered as alternative treatment options before deciding on CBS.
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    Future Protein Sources in Sports Nutrition: Sustainable Solutions
    (Springer, 2026-02) Tuna, Tuğba; Ersoy, Nesli; 336342
    Purpose of ReviewThis review evaluates the potential of alternative protein sources, including plant-based proteins, insect proteins, mycoproteins, microalgae, and cultured meat, in meeting the increasing demand for sustainable and functional protein solutions in sports nutrition.Recent FindingsStudies indicate that alternative protein sources provide significant environmental benefits, such as reduced greenhouse gas emissions and lower water use, while delivering essential nutrients to support athletic performance and recovery. Advances in technology and production methods have further enhanced their feasibility as replacements for conventional animal-based proteins.SummaryIntegrating alternative protein sources into sports nutrition offers a dual benefit: meeting athletes' dietary requirements and supporting global sustainability goals. These protein sources pave the way for innovative, environmentally conscious dietary practices in sports nutrition, marking a pivotal shift toward a more sustainable future.
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    Obesity and Obesity-Related Hypertension in Northern Cyprus: Findings from a Population-Based Cross-Sectional Study
    (Galenos, 2026-02) Berksel, Ersan; Özduran, Gülşen; 229345
    BACKGROUND/AIMS Obesity constitutes a chronic and multifactorial condition characterized by an excessive accumulation of adipose tissue and is linked to a wide range of comorbidities, including hypertension (HT). Its predominant cause is the disparity between caloric intake and the body’s energy utilization. As obesity rates persistently rise, the incidence of obesity-related conditions, particularly HT, is expected to increase. This study estimated the prevalence of general and abdominal obesity (AO) and obesity-related HT among adults in Northern Cyprus. MATERIALS AND METHODS In this cross-sectional observational study, data were collected between October 2023 and June 2024 from Turkish Cypriot adults aged 18-79 years residing in Northern Cyprus. RESULTS The population-level prevalences of general obesity, AO, and excess weight were 26.2%, 46.9%, and 63.2%, respectively. Obesity prevalence was higher in males (29.7%) than in females (23.1%), and excess weight affected 74.3% of males and 53.2% of females. AO was also more prevalent among males (49.6%) than among females (44.4%). The population-level prevalence of HT was 34.6% (36.1% in males, 33.1% in females). Among individuals with HT, 76.9% had obesity-related HT (77.6% among males and 76.1% among females). CONCLUSION Obesity and its associated HT are highly prevalent among adults in Northern Cyprus. With rising obesity rates, the burden of obesity-related conditions is likely to increase. Prevention strategies, alongside lifestyle interventions, anti-obesity pharmacotherapy, and metabolic surgery when appropriate, are essential for long-term control of weight and blood pressure.
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    Environmental impact of athletes’ diets greenhouse gas emissions, water footprint, and sustainability awareness
    (Springer, 2026-01) Acar, Selva; Tuna, Tuğba; Ersoy, Nesli; 336342
    This cross-sectional study evaluated the environmental impact of athletes’ dietary patterns by estimating greenhouse gas emissions (GHGE) and water footprint (WF). It also assessed knowledge, attitudes, and behaviors related to sustainable nutrition using a structured questionnaire aligned with the FAO definition of sustainable diets. Conducted between January and August 2023 in Ankara, the study included 100 elite athletes (mean age: 21.0 ± 3.3 years; 65% female) from various sports disciplines. Dietary intake was assessed using a semi-quantitative food frequency questionnaire, and GHGE and WF values were calculated based on life cycle assessment data. The mean GHGE and WF values of athletes’ diets were 3017.1 ± 1877.4 g CO₂-eq/day and 5.4 ± 3.2 mL/g, respectively. Male athletes and strength/power athletes exhibited significantly higher dietary environmental impacts than female and team sports athletes (p < 0.001 and p < 0.05, respectively). Red meat and animal protein consumption were strongly associated with higher GHGE and WF values (p < 0.001). Despite the increasing importance of sustainability, more than 90% of participants lacked accurate knowledge of sustainable nutrition. Moreover, a discrepancy was observed between athletes’ stated willingness to support environmental values and their actual food choices, indicating an intention–behavior gap. This study contributes to the limited literature by quantifying the environmental impact of athletes’ diets while concurrently examining sustainability-related behavioral factors. The findings underscore the importance of integrating sustainability principles into sports nutrition planning and education to reduce environmental impacts while maintaining performance goals.
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    The Relationship Between Climate Change Awareness, Sustainable Nutrition Behaviours and Acceptability of Alternative Protein Sources in Generation Z: A Cross-Sectional Study
    (Wiley, 2026-01) Tuna, Tuğba; Batu, Zehra; 336342
    This study investigates the relationship between climate change awareness, sustainable nutrition behaviours, and the acceptability of alternative protein sources among Generation Z university students. This cross-sectional study employed a mixed-methods approach, combining structured quantitative measures and open-ended qualitative questions in a digital survey. A total of 785 university students aged 18–29 from Türkiye participated in the study. The survey included the Behavioural Scale for Sustainable Nutrition, the Global Climate Change Awareness Scale, and the Attitudes Toward Alternative Protein Sources Questionnaire. Descriptive statistics, independent t-tests, one-way ANOVA, post hoc Tukey HSD tests, and correlation analyses (Pearson/Spearman) were conducted to examine the associations between climate change awareness, sustainable nutrition behaviours, and the acceptability of alternative protein sources, including edible mushrooms, algae, flowers, grasshoppers, crickets, and cultured meat. A statistically significant but moderate positive relationship was observed between climate change awareness and sustainable nutrition behaviours, particularly in food purchasing habits. A weaker but positive association was found for food preference, food waste reduction, and seasonal and local dietary practices. Participants reported low familiarity with alternative protein sources, with the highest acceptability for edible mushrooms (74.5%), followed by edible flowers (37.8%) and cultured meat (14.4%). While greater climate change awareness was linked to a higher willingness to consume certain alternative protein sources, this did not consistently translate into broader acceptance. These findings highlight the need for targeted awareness campaigns and educational initiatives to overcome cultural barriers and food neophobia, fostering a greater acceptance of sustainable protein sources.