All-or-nothing eating, and why "I've ruined it now" keeps coming back

All-or-nothing eating is the swing between keeping food rules exactly and dropping them all after one slip. Often, the sentence that starts it is "I've ruined it now". Mela Theory, the framework behind Nutrimelab, reads the swing as a learned habit, and habits can loosen. Progress here means more flexibility and trust around food, with no scale involved.

Say it's Tuesday, three in the afternoon. You've been "good" since Sunday night, and someone has left a packet of chocolate digestives by the kettle. You have one, and it's nice, and then the thought arrives quite calmly. I've ruined it now. By half past three the packet is half gone, and you've already decided that Monday is when you'll start again properly.

Nothing about that afternoon says you lack self-control. As Mela reads it, what often turns one biscuit into half a packet is the rule standing behind it, the one that says a day only counts if it's perfect. Once you can see the rule clearly, the swing it sets off gets easier to step out of, and that is what this week is for.

Intuitive Eating is an approach created by dietitians Evelyn Tribole and Elyse Resch, first published in 1995. It is weight-neutral, which means its aim is a working relationship with food and your body, not a number on a scale. What follows is my own teaching, shaped by that approach and by what I see in my work.

> Key Takeaways > > - All-or-nothing eating is a swing between keeping food rules exactly and dropping them, a pattern that tends to follow strict food rules. One slip can make the whole day feel lost, and the swing back often follows. > - Research on people who hold back on food links breaking a rule with eating more afterwards, and one study found that going without a favourite snack was followed by eating more of it. > - The aim is flexibility. This week, pick one low-pressure food situation and notice your thoughts before, during and after it.

What all-or-nothing eating looks like

It often starts with a rule, usually a sensible-sounding one, such as no sugar during the week or nothing after eight. For a few days the rule holds, and holding it feels like being in control. Then something ordinary happens, a birthday cake at work or a bad night's sleep, and the rule bends.

The thought that follows is the one in the title, and the swing comes straight after it. If the day is already ruined, there seems to be no reason to stop, so you carry on, often with the foods you've been missing and often faster than you'd like. Then comes the restart, a new date, usually a Monday, when the rule will be kept properly this time. Someone on a UK forum summed up the whole cycle in a handful of words, "all or nothing, start on a Monday, stop and overeat...". I hear versions of that sentence all the time.

What it costs is easy to miss, because each swing feels like a one-off. The days before the new start are often spent eating in a hurry, knowing it's temporary, so the food you're finally letting yourself have often isn't much enjoyed. The days after are spent on edge, waiting for the next slip. Mela reads a further cost. Your own hunger and fullness often barely get a say at either end, with the rule or the swing deciding for them, and over months that tends to leave you trusting yourself around food a little less each time.

The guilt that arrives in the hour after a slip deserves its own page, and what to say to yourself in the hour after is where I deal with it. This article stays with the pattern across days and weeks.

Why does one biscuit turn into the whole packet?

In my work, one biscuit tends to become the whole packet when a strict rule makes every bite count for the whole day. Once the rule is broken, there seems to be nothing left to protect, so stopping no longer feels worth it. Research on people who diet has linked breaking a food rule with eating more afterwards for about fifty years, and Mela reads that as the rule's doing more than the person's.

The early evidence came from a lab study by Herman and Mack in 1975. Volunteers were given different amounts of food first, and then their eating was measured. People who usually held back on food, whom the researchers called restrained eaters, ate more the larger that first amount had been. People who didn't hold back ate less, which is what you'd expect from a body that had already been fed (Herman and Mack, 1975). It was one lab study, so it started a line of research rather than settling the question.

Herman and Polivy, who ran much of that research, named the pattern the "what the hell effect", the moment when someone who believes their diet is already broken decides they might as well eat and enjoy it for now. In a 2020 article looking back on that work, they explain that once people who restrain their eating think they have gone over their limit, they are likely to carry on eating, and the guilt or low mood from the first slip can keep the eating going (Polivy and Herman, 2020). It is an opinion article summarising their lab work rather than a new study, and most of that work was with people who were dieting at the time.

Mela describes two of its six layers at work here. The rule lives in habits, a pattern repeated so often that it runs before you've thought about it. The swing lives in emotions, the mix of disappointment, defiance and relief that comes with "I've ruined it now". Mela reads the swing as something the rule sets up, which is why loosening the rule tends to quieten the swing more than tightening it does.

I rarely see trying harder at the rule help for long. There is a longer piece on why willpower is the wrong tool for this kind of pattern, and the short version is that the rule is the part worth changing.

The pull a forbidden food gains

Mela reads a forbidden food as one that tends to get louder. You notice it more and think about it more, and when it does turn up you're often more likely to eat a lot of it quickly. Telling yourself "never again" often keeps a food at the front of your mind rather than moving it to the back.

Research on forbidden foods is consistent with this. In a 2008 study, 68 women either went without a favourite snack for 24 hours while it was kept in view, or had no specific instruction. When everyone was then given free access to the snack, the women who had gone without it ate more of it, particularly those who both held back a lot and often ate more than they meant to (Soetens et al., 2008). It was a small study of women, one snack and one day, so treat it as a pointer.

Research on habituation adds the other half. People tend to respond less and less to a food that is presented to them again and again, and that fading is part of how eating comes to a natural stop (Epstein et al., 2009). That paper is a theoretical review drawing on animal and human studies rather than a single experiment.

In my work I see the everyday side of that. A food you've forbidden never gets the chance to become ordinary, so every encounter with it tends to feel like an event. If you find food on your mind for much of the day, what forbidding a food does to your attention goes further into it. A strong pull towards one particular food at one time of day is a different thing again, and what a craving is telling you treats it as information.

What flexibility is, and why it is the aim

If all-or-nothing is the trouble, the obvious answer seems to be moderation, and moderation often turns into a new rule. Two biscuits are allowed, three are a failure, and the swing starts again from a different number. Mela reads the all or nothing diet mentality as able to survive any rule that still has a line to cross.

Flexibility, as I use the word, is the ability to eat a food on a Tuesday afternoon without the rest of the day being decided by it. One biscuit can be one biscuit, or three, and either way the next meal is an ordinary meal. You can change your mind halfway through a packet, or not, and neither choice says anything about who you are. Tribole and Resch call the wider version of this making peace with food, and the first sign of it I see is usually small, a slip that stays a slip.

Flexibility also covers the days that go off plan for reasons that have nothing to do with food. A late train, a child who's ill, a work lunch you didn't choose. A rigid rule has no room for those days, so they get counted as failures. A flexible approach treats them as ordinary life.

Progress this week, and across the six weeks, is measured by how much room you have around food, how quickly you come back to an ordinary next meal, and how eating feels. Weight doesn't come into it.

This week's practice

Choose one low-pressure food situation this week. Low-pressure means a food you like and usually feel a bit tense about, in a setting where nothing much is riding on it. A slice of cake at a café on a Saturday, toast with butter at breakfast, a few crisps with your lunchtime sandwich. Pick something that feels manageable rather than the hardest food on your list, and leave big occasions for later.

Then notice your thoughts at three points.

1. Before you eat, notice what the rule says. Is there a "just this once", an "I'll be good tomorrow", a plan to make up for it?
2. While you eat, notice the taste and whether you're enjoying it, and whether you're eating faster than usual to get it over with.
3. Afterwards, notice what your mind does next, and whether "I've ruined it now" turns up and what it suggests.

Write one line about each, on your phone or the back of an envelope. Say it's Saturday and the cake was carrot cake. The note might read "Before, better have it now because I'm being good from Monday. During, nice, a bit sweet, ate it fast. After, wanted another slice, didn't, felt fine by the bus stop." Nothing in the note needs to be clever or kind.

Whatever happens, your next meal is the one you'd have had anyway, with nothing skipped and nothing made up for. Nothing here asks you to weigh, count, restrict or compensate. If you eat more than you expected, that goes in the note too, as information.

If food has felt joyless for a while, this practice is also a way back to enjoying it. Enjoyment often returns first with one food you like, eaten slowly, with your attention on the taste.

Today, choose your situation and put it in your diary for a day this week.

The week after

At the end of the week, read your notes back before you plan anything new. Look for the thought that came up most often, and for the moment, if there was one, when a slip stayed a slip. That moment is worth more than any fresh start, because it shows the swing can be interrupted without a new rule.

If you'd like a regular habit for this, there's a short piece on how to review the week instead of restarting it, with a few questions you can use each weekend. Looking back at what happened, kindly and in plain words, does the job a new start was trying to do, without the days of hurry beforehand.

Where this fits in my programme

This is the fourth week of a six-week map I use for improving your relationship with food without a diet. Last week was about why food is the quickest comfort, and next week moves from food to looking after the body you have today.

This is the kind of work we do together in my 7-week programme, in a small group.

Everything in this series is education rather than treatment. If you'd like a professional alongside you, when professional support is the next step explains who does what in the UK and how to find them.

If the swing between strict and out of control has started to feel frightening, or food takes up much of your day, please talk to your GP, or contact Beat, the UK's eating disorder charity, at beateatingdisorders.org.uk, where you'll find their free helplines.

Next step

See the 7-week programme