Impact of wine bottle and glass sizes on wine consumption at home: a within and between households randomised controlled trial
People drink less in restaurants when wine is served with smaller glasses and less at home from smaller bottles of wine. Would they also drink less wine at home when drinking from smaller glasses? And how much wine would people drink when using smaller glasses and smaller bottles? The results of the first study to address these questions – https://onlinelibrary.wiley.com/doi/10.1111/add.16005– suggests that consuming wine at home from smaller glasses could reduce consumption by about 6.5%. The effect of drinking wine in smaller bottles is less certain.
During two 14-day study periods, 217 households in the UK that drank wine regularly purchased a pre-set volume of wine – based on their usual weekly consumption – in either 75cl or 37.5cl bottles, in randomised order. They we also randomised to drink from either smaller glasses (290ml) or larger wine glasses (350ml).
What is the impact of health warning labels on motivation towards energy-dense snack foods?
Excess consumption of energy is a key driver of increasing rates of obesity, which in itself contributes to a range of non-communicable and communicable diseases.
One way to tackle excess consumption of energy is to use health warning labels (HWLs) that include aversive images illustrating the negative consequences of consuming high-calorie foods. Previous studies have found that image-and-text HWLs increase dietary self-control in relation to snacks and reduce hypothetical selection of high-calorie snacks.
What is the impact of e-cigarette retail displays on attitudes to smoking and e-cigarette use in children?
Tobacco retail displays are banned in many countries, including in the UK. This ban is to address the link between these displays and increased smoking among adults, and greater susceptibility to smoking among children, leading to poorer health. Tobacco products are stored instead within covered units; however, these units often remain visible and positioned below tobacco signage.
There is no equivalent ban on displays of electronic cigarettes (e-cigarettes) in the UK, which are often positioned alongside covered tobacco storage units. There is currently an absence of evidence on whether e-cigarette retail displays are linked to increased smoking or e-cigarette use.
Changing the assortments of foods and drinks on offer to consumers could make diets leaner and greener
Altering the mix of foods and drinks available in shops, restaurants and bars could help improve diets, reduce inequalities and protect the environment, according to a new analysis by Professor Theresa Marteau and colleagues at the Universities of Cambridge, UCL, Oxford and Aston.
Such measures, called availability interventions, might see a proportion of confectionery items on offer in supermarkets replaced with fruit or nuts, for example; or some meat based meals replaced with plant-based ones on a restaurant menu.
Unhealthy diets are one of the largest contributors to preventable disease, health inequalities and early deaths worldwide. Policies and interventions that reduce the supply and consumption of meat, alcohol and sugary foods would improve population health globally, reduce health inequalities and help limit environmental harms associated with food production.
Does communicating evidence of multiple compared to single benefits increase public support for policies?
Reducing the amount of high calorie foods, meat and alcohol people consume would improve population and planetary health. Interventions shown to work, however, tend to lack public support, which reduces their chances of being implemented into government policies. Telling people that policies are effective can increase public support but there is uncertainty about how best to communicate this information.
Do different sizes and shapes of tableware impact self-serving of food and alcohol?
Excessive consumption of alcohol and high calorie foods are two significant preventable causes of many diseases. Changing the size of tableware or packaging is one possible method for reducing consumption.
In a laboratory setting, we randomised 140 adults to the order they completed two studies. In each study participants were asked to complete six conditions in random order, during which they were instructed to self-serve their typical amount of food or wine.
Energy labelling for healthier selection and consumption of food or alcohol
Our new systematic review protocol is now published in the Cochrane Library. This protocol is an update to a previous review published in 2018, which found that adding calorie labels to menus and next to food in restaurants, coffee shops and cafeterias, could reduce the calories that people consume, although the quality of evidence was low.