When Your Partner Isn’t On Board
Key Takeaways
- Partners do influence each other. In one large study of couples aged 50 and older, people were more likely to change a behavior when their partner changed first. That’s an association, not proof.
- How the influence arrives matters. In a 2019 study of couples, supportive encouragement went with better outcomes and critical pressure went with worse ones.
- Trying to change many things at once weakened even the supportive approach. Asking for one thing is better than asking for five.
- Nobody has tested scripts for this conversation. What follows is the evidence plus reasoning, kept apart.
The comment is small and it comes at dinner. “Are you still doing that?” Or it comes as a joke. Or it doesn’t come at all, which is sometimes worse: your partner just eats what they always eat, across the table, while you do something different, and neither of you says a word about it.
You can’t make anyone come along. But the way you ask, or don’t ask, may change more than the answer does.
This is about what the research on couples says about that, and what it can’t say.
The influence runs both ways
Start with the big picture. A study published in JAMA Internal Medicine in 2015, using the English Longitudinal Study of Ageing, followed 3,722 married and cohabiting couples aged 50 and older. It looked at three health behaviors, among them smoking and physical activity, and asked whether one partner’s change predicted the other’s.
It did. People whose partners had newly adopted a healthier behavior were considerably more likely to change as well. And partners who had just changed seemed to have more effect than partners who had always been that way, which suggests the act of changing, rather than the state of being changed, is what travels.
I’m not repeating the percentages. They’re real in the paper, but this blog doesn’t publish numbers a reader could chase, and the design is observational: it shows who changed alongside whom, not that one caused the other. The sample is also 50 and older, so it may not describe your household.
The useful part is directional. Your change is already information to the person across the table, whether you mention it or not.
What the same research can’t tell you
It doesn’t say that changing yourself will bring your partner along. Many partners in that study didn’t change. It doesn’t say what to say, or whether to say anything.
So the question of how to behave while you wait is open, and one other study comes closer.
Support and pressure aren’t the same thing
In 2019, Young, Burke and Curran published a study in the Journal of Social and Personal Relationships on what they call health-related social control: the ways partners try to influence each other’s behavior. They compared positive approaches (encouraging, supportive messages) with negative ones (critical, controlling messages).
Positive social control went with more healthy and fewer unhealthy changes in the partner, and with better relationship satisfaction. Negative social control went the other way: lower satisfaction and more unhealthy behavior.
Then comes the detail I found most useful. When people tried to influence their partner across too many areas at once, even the positive approach became less effective. The breadth of the attempt mattered.
Two cautions. This is a correlational study of self-reported relationships, so I can’t say that gentleness causes better outcomes. And “positive” and “negative” were defined by the study’s questionnaire, which may not match how a given sentence lands in your kitchen.
The pattern from the earlier couples study
The small 2003 study of 20 newly married couples in Appetite described what it called “food projects”: cases where one partner was committed to molding the other’s food choices. It linked those projects to conflict. The same study found that most couples moved toward similarity over time, and that some personal food preferences persisted without trouble.
Taken together, the three studies sketch something consistent, though none was designed to test it: influence between partners is real, it works best when it’s gentle and narrow, and it works badly when it turns into a campaign.
So what can you actually ask for?
Here is the reasoning, flagged as such. If what lands badly is pressure and breadth, then what lands better is probably a narrow, specific request that’s about you and not about them.
Ask for a role, not a rule. “Can you take the first ten minutes at six?” is a role. “Can you stop buying that?” is a rule about them. The first asks for help with your change; the second asks them to change theirs.
Ask for one thing. If you have five, choose the one that matters most this month. The breadth finding suggests five asks do less than one.
Ask about the evening, not the food. How the evening runs is shared ground. What’s on each person’s plate usually isn’t.
And ask once. Repeating a request is how a request becomes a project.
What not to do
Don’t narrate your progress at the table. Don’t comment on what your partner is eating, even kindly, even as a joke. Don’t offer a taste “just to see.” And don’t treat their not changing as a statement about you or about them.
I know this one is hard. When a change is going well, the urge to share it is strong. The couples evidence suggests it’s worth keeping it quiet, at least at the table.
When the answer is still no
Some partners won’t come along, and that’s a legitimate answer. The 2003 couples study found that individual preferences persisted inside shared meals, and that this eased conflict. A household can hold two ways of eating without either being a verdict.
What the research doesn’t cover is how long that stays comfortable. Twenty couples interviewed over a year says little about ten years.
The honest summary
Your change affects the person across from you, probably more than you’d guess and less than you’d hope. Gentle, narrow requests went with better outcomes in the study I could verify; pressure and breadth went with worse. Nobody has tested the exact words.
So pick one thing, make it a role and not a rule, ask once, and let the table stay quiet.
References
- Jackson, S. E., Steptoe, A., & Wardle, J. (2015). The influence of partner’s behavior on health behavior change: The English Longitudinal Study of Ageing. JAMA Internal Medicine. (Details from a summary page; the journal page was blocked.)
- Young, V. J., Burke, T. J., & Curran, M. A. (2019). Interpersonal effects of health-related social control: Positive and negative influence, partner health transformations, and relationship quality. Journal of Social and Personal Relationships, 36(11–12).
- “Food choices among newly married couples: convergence, conflict, individualism, and projects.” Appetite (2003).
Diana Woods researches and writes about sleep, environment and everyday habit. She has no clinical training, and that shapes what this site does: instead of explaining what might be wrong with you, she reads the behavioural and environmental research and writes about the parts you can act on — the light in the hallway, the fifteen feet to the bathroom, what the morning does to the night that follows.
Every article here cites its sources, and she tries to include the parts researchers themselves flag as uncertain. Studies disagree, sample sizes are small, and correlation gets reported as cause more often than it should. Saying so is part of the job.
