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Hyodo A, Mikami A, Horie K, Mitoh Y, Ninomiya Y, Iida S, Yoshida R. Salivary buffering capacity is correlated with umami but not sour taste sensitivity in healthy adult Japanese subjects. Arch Oral Biol 2024; 165:106013. [PMID: 38833772 DOI: 10.1016/j.archoralbio.2024.106013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2024] [Revised: 05/08/2024] [Accepted: 05/23/2024] [Indexed: 06/06/2024]
Abstract
OBJECTIVE Saliva serves multiple important functions crucial for maintaining a healthy oral and systemic environment. Among them, the pH buffering effect, which is primarily mediated by bicarbonate ions, helps maintain oral homeostasis by neutralizing acidity from ingested foods. Therefore, higher buffering capacity, reflecting the ability to neutralize oral acidity, may influence taste sensitivity, especially for sour taste since it involves sensing H+ ions. This study aims to explore the relationship between salivary buffering capacity and taste sensitivities to the five basic tastes in healthy adult humans. DESIGN Eighty seven healthy adult students participated in this study. Resting saliva volume was measured using the spitting method. The liquid colorimetric test was used to assess salivary buffering capacity. The whole-mouth taste testing method was employed to determine the recognition threshold for each tastant (NaCl, sucrose, citric acid, quinine-HCl, monosodium glutamate). RESULTS Taste recognition thresholds for sour taste as well as sweet, salty, and bitter tastes showed no correlation with salivary buffering capacity. Interestingly, a negative relationship was observed between recognition threshold for umami taste and salivary buffering capacity. Furthermore, a positive correlation between salivary buffering capacity and resting saliva volume was observed. CONCLUSIONS Salivary buffering capacity primarily influences sensitivity to umami taste, but not sour and other tastes.
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Affiliation(s)
- Aiko Hyodo
- Department of Oral Physiology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Japan; Department of Oral and Maxillofacial Reconstructive Surgery, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Japan
| | - Ayaka Mikami
- Department of Oral Physiology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Japan; Department of Oral and Maxillofacial Reconstructive Surgery, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Japan
| | - Kengo Horie
- Department of Oral Physiology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Japan; Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Japan
| | - Yoshihiro Mitoh
- Department of Oral Physiology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Japan; Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Japan
| | - Yuzo Ninomiya
- Department of Oral Physiology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Japan; Graduate School of Dental Science, Kyushu University, Japan; Monell Chemical Senses Center, Philadelphia, PA, USA
| | - Seiji Iida
- Department of Oral and Maxillofacial Reconstructive Surgery, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Japan; Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Japan
| | - Ryusuke Yoshida
- Department of Oral Physiology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Japan; Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Japan.
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Feraco A, Armani A, Amoah I, Guseva E, Camajani E, Gorini S, Strollo R, Padua E, Caprio M, Lombardo M. Assessing gender differences in food preferences and physical activity: a population-based survey. Front Nutr 2024; 11:1348456. [PMID: 38445208 PMCID: PMC10912473 DOI: 10.3389/fnut.2024.1348456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Accepted: 02/12/2024] [Indexed: 03/07/2024] Open
Abstract
Introduction Food preferences are influenced by various factors, such as culture, age, and gender. The relationship between food tastes, meal preferences, and eating habits has been studied extensively in recent years; however, research on gender differences in these fields still needs to be addressed. The aim of this study was to investigate gender differences in food preferences and eating habits through self-administered questionnaires in a large Italian population sample. Methods The online survey included questions on food tastes, meal preferences, eating habits, and sport involvement. Results The results of the study underline significant gender-specific dietary tendencies among the 2198 participants (1314 females and 884 males, average age 41.1 ± 12.7 yrs). The majority of subjects were in the annual income range between €20,000 and €40,000. Our analysis reveals significant gender differences in dietary preferences and eating habits. Men prefer red and processed meat, with significantly higher consumption rates than women. Women, on the other hand, show a greater inclination towards vegetables, whole grains, tofu, and high-cocoa-content dark chocolate, aligning with healthier food choices. The study also found differences in eating behaviors, including the frequency of meals, snacking habits, and hunger patterns: women tend to eat more frequently and report higher levels of hunger in the morning, while men tend to skip snacks. Furthermore, differences extend to eating contexts, such as the speed of eating, eating out, and eating alone, with men more likely to eat quickly and dine out. Episodes of uncontrolled eating without hunger also differ, with women reporting these behaviors more frequently than men. In addition, the analysis of sports preferences showed distinct patterns, with a lower percentage of women playing sports and those who do play sports preferring endurance and strength training, while men prefer strength training and endurance sports. Discussion These findings elucidate the complex interplay of biological, cultural, and gender-based factors in shaping dietary preferences and eating behaviors. In particular, our study reveals that gender dynamics significantly influence food choice and eating habits: women tend to choose healthier foods and eat regular meals, while men show preferences for specific tastes and meal-related behaviors. This analysis underscores the nuanced differences between male and female dietary patterns, influenced not only by inherent biological factors such as genetics and hormonal responses but also by societal norms and cultural contexts. Taken together, our results highlight the importance of integrating different perspectives, thus providing valuable insights into the development of public health strategies and tailored nutrition interventions aimed at chronic disease prevention.
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Affiliation(s)
- Alessandra Feraco
- Department of Human Sciences and Promotion of the Quality of Life, San Raffaele Open University, Rome, Italy
- Laboratory of Cardiovascular Endocrinology, San Raffaele Research Institute, IRCCS San Raffaele Roma, Rome, Italy
| | - Andrea Armani
- Department of Human Sciences and Promotion of the Quality of Life, San Raffaele Open University, Rome, Italy
- Laboratory of Cardiovascular Endocrinology, San Raffaele Research Institute, IRCCS San Raffaele Roma, Rome, Italy
| | - Isaac Amoah
- Department of Biochemistry and Biotechnology, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Elena Guseva
- Department of Human Sciences and Promotion of the Quality of Life, San Raffaele Open University, Rome, Italy
| | - Elisabetta Camajani
- Department of Human Sciences and Promotion of the Quality of Life, San Raffaele Open University, Rome, Italy
- Laboratory of Cardiovascular Endocrinology, San Raffaele Research Institute, IRCCS San Raffaele Roma, Rome, Italy
| | - Stefania Gorini
- Department of Human Sciences and Promotion of the Quality of Life, San Raffaele Open University, Rome, Italy
- Laboratory of Cardiovascular Endocrinology, San Raffaele Research Institute, IRCCS San Raffaele Roma, Rome, Italy
| | - Rocky Strollo
- Department of Human Sciences and Promotion of the Quality of Life, San Raffaele Open University, Rome, Italy
| | - Elvira Padua
- Department of Human Sciences and Promotion of the Quality of Life, San Raffaele Open University, Rome, Italy
| | - Massimiliano Caprio
- Department of Human Sciences and Promotion of the Quality of Life, San Raffaele Open University, Rome, Italy
- Laboratory of Cardiovascular Endocrinology, San Raffaele Research Institute, IRCCS San Raffaele Roma, Rome, Italy
| | - Mauro Lombardo
- Department of Human Sciences and Promotion of the Quality of Life, San Raffaele Open University, Rome, Italy
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Pavlidou E, Papadopoulou SK, Fasoulas A, Papaliagkas V, Alexatou O, Chatzidimitriou M, Mentzelou M, Giaginis C. Diabesity and Dietary Interventions: Evaluating the Impact of Mediterranean Diet and Other Types of Diets on Obesity and Type 2 Diabetes Management. Nutrients 2023; 16:34. [PMID: 38201865 PMCID: PMC10780530 DOI: 10.3390/nu16010034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 12/15/2023] [Accepted: 12/18/2023] [Indexed: 01/12/2024] Open
Abstract
BACKGROUND Diabesity, the intersection of obesity and diabetes, presents a global health crisis with profound implications. Addressing diabesity requires multifaceted strategies, with diet playing a pivotal role. Over the last 15 years, clinical studies have intensified their exploration of various dietary approaches in diabesity management. This literature review aims to synthesize findings from clinical studies conducted in the last 15 years, shedding light on the efficacy, mechanisms, and nuances of different diet types in diabesity management with special focus on the Mediterranean diet (MD). METHODS Thorough research of academic databases yielded a collection of relevant clinical studies. These studies encompassed a range of dietary strategies, including the MD, low-carbohydrate diets, plant-based diets, high-protein diets, low-fat regimens, and intermittent fasting. Key findings, methodologies, and outcomes were thoroughly extracted and analyzed. RESULTS The last 15 years have witnessed considerable improvements in recognizing the role of human nutritional habits in diabesity management. The MD appears to be the most well-recognized diet, exerting favorable effects against both obesity and diabetes. Low-carbohydrate diets were found to enhance glycemic regulation and decrease insulin resistance. Plant-based diets demonstrated potential benefits in weight management and cardiometabolic health. High-protein, low-fat dietary models exhibited positive effects on satiety and body weight decline. Intermittent fasting regimens also exerted metabolic improvements and body weight decline. Personalization emerged as a crucial factor in dietary recommendations. CONCLUSIONS Clinical studies from the last 15 years underscore the intricate relationship between diet types and diabesity management. The above results contribute to an increasing body of evidence, emphasizing the need for tailored dietary approaches and especially the MD. Healthcare providers can utilize this knowledge to offer personalized dietary recommendations for individuals with diabesity, potentially curbing the rise of these twin epidemics and improving the well-being of affected populations.
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Affiliation(s)
- Eleni Pavlidou
- Department of Food Science and Nutrition, School of the Environment, University of the Aegean, 81400 Lemnos, Greece; (E.P.); (A.F.); (O.A.); (M.M.); (C.G.)
| | - Sousana K. Papadopoulou
- Department of Nutritional Sciences and Dietetics, School of Health Sciences, International Hellenic University, 57400 Thessaloniki, Greece
| | - Aristeidis Fasoulas
- Department of Food Science and Nutrition, School of the Environment, University of the Aegean, 81400 Lemnos, Greece; (E.P.); (A.F.); (O.A.); (M.M.); (C.G.)
| | - Vasileios Papaliagkas
- Department of Biomedical Sciences, School of Health Sciences, International Hellenic University, 57400 Thessaloniki, Greece; (V.P.); (M.C.)
| | - Olga Alexatou
- Department of Food Science and Nutrition, School of the Environment, University of the Aegean, 81400 Lemnos, Greece; (E.P.); (A.F.); (O.A.); (M.M.); (C.G.)
| | - Maria Chatzidimitriou
- Department of Biomedical Sciences, School of Health Sciences, International Hellenic University, 57400 Thessaloniki, Greece; (V.P.); (M.C.)
| | - Maria Mentzelou
- Department of Food Science and Nutrition, School of the Environment, University of the Aegean, 81400 Lemnos, Greece; (E.P.); (A.F.); (O.A.); (M.M.); (C.G.)
| | - Constantinos Giaginis
- Department of Food Science and Nutrition, School of the Environment, University of the Aegean, 81400 Lemnos, Greece; (E.P.); (A.F.); (O.A.); (M.M.); (C.G.)
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