Sharing meals is a daily part of most romantic relationships. When couples have conflicting views on eating meat, navigating those differences becomes a regular routine. This study explored how one partner’s dietary beliefs influence what both people end up eating.

Researchers studied 136 romantic couples in Switzerland where one partner ate more meat than the other. They tracked what the couples ate across 28 shared meals and asked about each partner’s reasons for eating or avoiding meat. In total, the study included over 7,000 meal ratings. These ratings touched on factors such as whether people felt pressured by their partner or capable of preparing plant-based alternatives.

Participants were 24 years of age on average. Just over half (52%) identified as female, with the remainder (48%) identifying as male. Partners who ate more meat tended to be male (79%), while most lower-consuming partners were female (84%). Overall, higher consumers ate meat at about 47% of their meals, compared to around 25% for lower consumers.

Why People Eat Meat

Four main beliefs drive meat consumption. These are often referred to as the “4Ns.”

• Necessary: Believing that meat is essential for health and survival (e.g., thinking you must eat chicken to get enough protein)
• Natural: Believing that humans are biologically meant to eat meat (e.g., arguing that human evolution dictates an omnivorous diet)
• Normal: Believing that eating meat is standard, expected social behavior (e.g., roasting a turkey for Thanksgiving because it’s tradition)
• Nice: Believing that meat is enjoyable and tastes good (e.g., ordering a steak simply because you crave the flavor)

In this study, the researchers found that when one partner thought that meat was necessary or nice, the other ate more meat too. This happened for both higher and lower consumers.

The “normal” belief worked differently. Only partners who already ate more meat were influenced by beliefs about normality. They ate more meat when either they or their partner believed that eating meat was normal. They also ate more meat when their partner believed that meat was natural.

Why People Avoid Meat

Three main concerns drive people to eat less meat or avoid it altogether: personal health, environmental impact, and animal welfare. In this study, the researchers also looked at pandemic prevention as a newer motive, given that animal agriculture can increase the risk of zoonotic disease spread.

The analysis revealed that people who cared more about the environment or animal rights ate less meat. These effects were strong and consistent. Furthermore, higher consumers ate less meat when their lower-consuming partners cared about environmental issues.

The health motive didn’t show the same pattern. In fact, when the higher-consuming partner valued health, the lower consumer actually ate more meat. This might be because health concerns can support both eating and avoiding meat, depending on what you believe is healthier. The pandemic prevention motive didn’t significantly predict meat consumption.

What Happens During Shared Meals

The researchers also asked about specific meals, not just general beliefs. They found that day-to-day factors matter too.

Lower consumers were more likely to eat meat when they felt pressured by their partner. This pressure effect only showed up for the partners who normally ate less meat. It suggests that cultural norms around meat-eating put the lower consumer in a difficult position. When they feel pressure from their partner, they’re more likely to give in and eat meat.

Cooking skills played an interesting role. Partners who normally ate more meat sometimes felt unable to prepare plant-based alternatives. Generally, when they felt this way, their lower-consuming partners ate more meat. This makes sense: if the person cooking doesn’t know how to make good vegetarian meals, both partners end up eating more meat. However, on specific days when the higher consumer felt even less capable than usual, the lower-consuming partner actually ate less meat. The researchers suggest this might be because the lower consumer takes over cooking on those days and makes what they prefer.

Ethical concerns about animals consistently predicted eating less meat. This was true for both partners, but stronger for those who already ate less meat. People with higher ethics scores were much less likely to eat meat, dairy, or eggs, and more likely to eat vegetables.

Implications

This research shows that meat consumption isn’t just an individual choice. It’s shaped by the people we live with, especially romantic partners who share meals regularly.

The findings have implications for encouraging people to eat less meat. Appeals based on taste, health, or necessity might backfire because they can reinforce meat-eating in both partners. Conversely, environmental concerns showed some ability to reduce meat consumption even in the higher-consuming partner.

The study highlighted practical barriers. When one partner doesn’t know how to cook plant-based meals, both people end up eating more meat. This suggests that teaching people how to prepare plant-based meals could affect not just them but also their partners. Partner pressure emerged as a significant factor for those trying to eat less meat. The individual who eats less often feels pressured to eat more, while the person who eats more doesn’t experience the same pressure to eat less. This asymmetry makes sense given that meat-eating is the cultural norm in most places.

Future research could examine how these dynamics unfold in newer relationships or among partners with bigger dietary differences. It would also be valuable to understand how couples can navigate different food preferences without harming their relationship satisfaction. For advocates working to reduce meat consumption, these findings highlight the importance of the social context. Interventions that help people navigate dietary differences with their partners, teach practical cooking skills, and address social pressure might be more effective than approaches focused only on individual beliefs.