Nutritional Psychology

  Gut Microbiome, Loneliness, and Wisdom: A Nutritional Psychology Perspective Loneliness has consistently been linked to poorer well-being, while wisdom appears to promote emotional resilience and life satisfaction. Beyond psychological outcomes, loneliness has also been associated with changes in cardiovascular, neuroendocrine, and immune functioning, including activation of pathways within the microbiota–gut–brain axis, particularly the hypothalamic–pituitary–adrenal axis. Building on this foundation, the present study explored whether the gut microbiome is associated with loneliness, wisdom, or both. Study Design The study included 184 community-dwelling adults aged 28 to 97 years. Participants completed questionnaires measuring loneliness, wisdom, compassion, social support, and social engagement. Fecal samples were collected and analyzed using 16S rRNA sequencing to assess gut microbial diversity. Two types of microbial diversity were examined: Alpha diversity , which...

 Mental Health Professionals Report Poor Literacy for Nutritional Medicine: International Survey Summary :  A 2021 international online survey by Mörkl et al. assessed nutritional literacy among mental health professionals (MHPs) across 52 countries. The sample included psychologists, psychiatrists, psychotherapists, and professionals in training, with most participants based in Europe and additional representation from Asia, North America, Oceania, South America, and Africa. The findings revealed a substantial gap between interest in nutritional psychiatry and formal training. Although 92.9 percent of respondents expressed a desire to expand their knowledge of nutritional psychiatry, only 0.8 percent rated their nutrition education as “very good.” Most participants reported having no formal training in nutrition. Despite this, many were already integrating nutritional strategies into clinical practice: 58.6 percent recommended supplements and 43.8 percent recommended dietary...

 The Psychology of Food Insecurity: Effects of Early COVID-19 on Mental Health Summary:  Food insecurity is a critical issue within nutritional psychology due to its strong impact on mental health. During the early months of the COVID-19 pandemic , food insecurity in the United States increased dramatically, rising from 11 percent of households in 2018 to approximately 35–38 percent in early 2020. Among low-income adults, 44 percent experienced food insecurity, alongside sharp increases in depression , anxiety , and psychological distress. Wolfson, Garcia, and Leung (2021) examined the relationship between food insecurity and mental health outcomes in a low-income adult sample of 1,476 participants between March 19 and March 24, 2020. Household food security over the previous 30 days was assessed using the 18-item U.S. Household Food Security Survey, with food insecurity defined as low or very low food security based on U.S. Department of Agriculture criteria. Mental healt...

  Does Exposure to Food Advertisements Influence Dietary Intake? This research highlights the diet sensory perceptual relationship (DSPR) as a core mechanism within the broader diet mental health relationship and a foundational component of nutritional psychology . The DSPR explains how sensory and perceptual experiences influence dietary choices and eating behavior. Zimmerman and Shimoga (2014) investigated how exposure to food advertising affects food selection, particularly under varying levels of cognitive demand. Participants were assigned to one of four conditions combining food or non food advertisements with either cognitively demanding or non demanding tasks. Researchers measured both the number of unhealthy snacks selected and total caloric intake. Results showed that participants exposed to food advertisements selected 28 percent more unhealthy snacks than those exposed to non food advertising, resulting in an average increase of 65 kilocalories. Im...

  Child Nutritional Psychology: Diet Increases Risk of Mental Health Issues in Adulthood Cardiometabolic conditions are often linked with mental health disorders such as depression and psychosis. These issues are usually viewed as concerns of older adulthood, not childhood. As a result, the role of children’s diets in long term mental and metabolic health is frequently overlooked. Research published on January 13, 2021 challenges this assumption. In a large longitudinal study that followed nearly 15,000 children from early childhood into young adulthood, researchers tracked fasting insulin levels at ages 9, 15, 18, and 24, alongside repeated measurements of body mass index. When participants reached the age of 24, they completed a semi structured clinical interview designed to identify psychotic experiences and symptoms of depression. This allowed researchers to explore how early metabolic markers related to later mental health outcomes. After adjusting for a wide range of conf...

The Evolution of Food and Mood: A New Conceptualization in Mental Healthcare Summary:  Research in the emerging field of Nutritional Psychiatry has demonstrated that diet influences a wide range of mental health outcomes. While common effects of nutrients like caffeine or tryptophan are widely recognized, recent findings show that broader dietary and nutrient-intake patterns can shape mood, behavior, and psychological functioning in more complex ways. Evidence now supports not only correlational but also causal links between diet and certain mental health outcomes. Physiological Mechanisms Diet affects mental health through multiple biological pathways, including its ability to influence: Neurotransmitter production and regulation Gut microbiome composition Immune and central nervous system signaling Inflammatory and oxidative processes These mechanisms provide empirical support for the concept of “good mood food,” validating previously anecdotal claims through peer-...

 Dietary Sugar Consumption and Health Outcomes Summary: Key Study Overview Huang and colleagues (2023) conducted an umbrella review published in the BMJ, analyzing 73 meta-analytic articles to examine connections between sugar consumption and adverse health outcomes. This comprehensive study represents one of the highest levels of scientific evidence synthesis. Major Findings Harmful Health Associations: The research identified associations between sugar consumption and 45 harmful health outcomes across multiple categories: 18 metabolic issues 10 cardiovascular conditions 7 types of cancer 10 other adverse medical conditions Strongest Evidence: The highest quality evidence linked sugar consumption to increased body weight , particularly in children. Specific Health Impacts Obesity in Children: Children consuming high quantities of sugar-sweetened beverages showed a 55% higher likelihood of being obese compared to non-consumers. Cardiovascular Disease: Every addit...