Portion size norm is described as the perception of how much of a given food people choose to eat. The authors of this featured article conducted a systematic review to examine the portion size norm of discretionary foods and assess the methodologies used to investigate the norm. Join us this episode as editor-in-chief Dr. Douglas Taren speaks with Qingzhou (Monica) Liu and Anna Rangan from The University of Sydney about their thoughts on their findings.

Diet quality is a multidimensional concept that incorporates healthy food choices, nutrient adequacy, food variety, moderation/excess, and overall balance. The authors of this episode's featured article conducted a review to examine the consumption of both nutrients and foods or food groups in recognition of the importance of the relationships between nutrients, foods, and dietary patterns that underpin diet quality. Join us for a conversation with article co-author Erynn McAuley from the School of Exercise and Nutrition Sciences, Queensland University of Technology, Kelvin Grove, Queensland, Australia.

Poor sleep is increasingly seen as an issue of public health concern. In recent years, there has been growing interest in protein as a route to improve sleep outcomes; however, the evidence is limited and inconclusive. Join us this episode as Dr. Douglas Taren speaks with authors Janine Wirth and Lorraine Brennan from the UCD School of Agriculture and Food Science, University College Dublin, for this episode's featured article.

Aging is an essential milestone that governments worldwide must plan for. At a global level, Japan currently has the highest share of population older than 65 years. Elderly individuals living alone encounter many challenges typically not faced by those living in a multiperson household. Nutrition status and diet are 2 such challenges, both of which are crucial determinants of health and well-being. Join us this episode as Dr. Douglas Taren speaks with the authors from this episode's featured article, Midori Ishikawa and Tetsuji Yokoyama from the National Institute of Public Health, Wako, Saitama, Japan.

To mitigate the age-related decline in skeletal muscle quantity and quality, and the associated negative health outcomes, it has been proposed that dietary protein recommendations for older adults should be increased alongside an active lifestyle and/or structured exercise training. The question therefore arises as to where this dietary protein required for meeting the protein demands of the rapidly aging global population should (or could) be obtained. Join us this episode as Douglas Taren speaks with co-authors Ino van der Heijden and Benjamin Wall from the Department of Sport and Health Sciences, College of Life Environmental Sciences, University of Exeter, Exeter, United Kingdom, to hear more from them on their research and findings. 

This episode, Dr. Douglas Taren speaks with Mateus de Lima Macena and Dr. Nassib Bezerra Bueno from Universidade Federal de Alagoas, Maceió, Alagoas, Brazil. Their article assesses effects of dietary polyphenols, from food sources or supplements, on the anthropometric, glycemic, renal, inflammatory, and oxidative stress markers in adults with diabetic nephropathy (DN). Join us for this conversation with this month's featured authors. 

In North American countries, synthetic folic acid (FA) is overconsumed by pregnant women, and uncertainty exists about its potential unintended health effects. Because the metabolism of FA is different than that of other folate forms, it may modulate disease risk differently. In this episode, Dr. Taren speaks with Dr. Emanuela Pannia and Dr. Rola Hammoud, authors from this month's featured article on their examination of role folate, in its synthetic and bioactive form, as an in utero modifier of metabolic outcomes in mothers and offspring.

This episode, Dr. Taren speaks with Dr. Maiara Cristina Lima and Dr. Débora Kurrle Venske from University of Santa Catarina, Florianópolis, Santa Catarina, Brazil. Their article is a systematic review on the effects of the ketogenic diet (KD) in children and adults with pharmacoresistant epilepsy on cognitive function. Join us for this conversation.

Dietary carotenoid intake is associated with vitamin A status and healthy visual and cognitive function in early life. To date, however, only limited population-level data on the concentrations of carotenoids in human milk or infant blood have been available to assess the dietary exposure of infants to carotenoids. This episode, Nutrition Reviews Editor in Chief, Dr. Douglas Taren, speaks with Dr. Nancy Moran who with her co-authors conducted a systematic review that seeks to define worldwide carotenoid concentrations in human milk and infant blood. Join us for this conversation.

Despite producing sufficient food for the global population, the growing prevalence of food insecurity in developed countries is cause for concern. The millions of metric tons of food wasted each year could be used instead to drastically lower rates of food insecurity and address food sustainability. This episode, we speak with Amanda Grech from the School of Life and Environmental Sciences, The University of Sydney. She, and her co-authors, conducted a scoping review, aimed to identify barriers to and enablers of harnessing food waste across food sectors, including food retail, households, and food rescue organizations, to address food insecurity in a developed country, Australia.