Health Rules Need Context

Why We Like Health Rules

Most people like health rules. Rules simplify decisions, reduce uncertainty and offer the comforting sense that someone has already done the difficult thinking on our behalf. Eat after 8pm and gain weight. Avoid carbohydrates if you want to lose fat. Drink eight glasses of water a day. Walk 10,000 steps. Never skip breakfast. Avoid processed foods. Rules are attractive because they remove judgement from the equation. Follow the rule and the outcome will follow naturally behind it.

This attraction is understandable because health can feel complicated. Faced with thousands of articles, podcasts, videos and opinions, simple instructions provide relief from decision fatigue. Rules promise certainty in an area of life that often feels full of contradictions. The problem is not that rules exist. The problem is that health rarely behaves as though a single answer applies equally well to everyone.

Useful Advice Often Becomes Universal Advice

Many health rules begin life as useful observations before slowly hardening into universal truths that were never intended to be universal. A person who frequently snacks late at night while watching television may genuinely benefit from avoiding food after dinner. Somewhere along the way, that becomes the broader statement that eating after 8pm is unhealthy regardless of circumstances. A recommendation that office workers increase their daily movement becomes a universal target of 10,000 steps despite the number itself originating from marketing rather than physiology. Useful guidance slowly transforms into rigid doctrine.

This does not make the original advice wrong. It simply makes it incomplete.

The same pattern appears repeatedly throughout health and nutrition. Carbohydrates become unhealthy rather than simply inappropriate in certain quantities or situations. Fasting becomes essential rather than one possible strategy among many. Rest days become laziness. High training volume becomes discipline. Health conversations have a habit of losing the context that gave the advice value in the first place.

Context Changes Everything

Consider carbohydrates. An office worker spending most of the day at a desk may thrive on a different intake from a construction worker, a marathon runner or a teenager playing competitive sport six days a week. Advice that improves one person’s health may actively undermine another person’s energy, recovery or performance. The same principle applies to meal timing. A shift worker finishing work at midnight does not suddenly become unhealthy because dinner happens at 1am rather than 7pm. Context changes the meaning of the behaviour.

Protein offers another useful example. A sedentary twenty-five-year-old and an active seventy-year-old may have very different requirements despite their vastly different ages. An older adult trying to preserve muscle mass, independence and bone health may benefit enormously from nutritional advice that looks quite different from the recommendations given to someone else. Neither approach is more correct. They are simply solving different problems.

Even advice that appears universally sensible often becomes more complicated under closer examination. Drinking more water is generally helpful until someone interprets that as carrying a bottle everywhere and forcing fluids despite never feeling thirsty. Avoiding processed foods is directionally sound until we remember that yoghurt, tofu, frozen vegetables, wholemeal bread and canned beans all sit somewhere on the processing spectrum. The world rarely divides itself neatly into healthy and unhealthy categories as easily as social media would prefer.

Health advice is rarely right or wrong in isolation. More often, it is right or wrong within a particular context.

Why Health Feels More Confusing Than Ever

Social media algorithms are not particularly interested in context. Context travels poorly as a headline. Certainty travels extremely well. The statement that vegetables are generally beneficial struggles to compete with the claim that everything we thought we knew about vegetables was wrong. Nuance rarely goes viral. Strong opinions do. Conflict does. Absolute statements do. This is one reason health advice feels increasingly confusing despite the availability of more information than at any other point in human history.

The challenge for most people is therefore not a shortage of information but deciding which information deserves attention. The sheer volume of opinions creates the illusion that health has become impossibly complicated when, in reality, many of the fundamental principles have remained remarkably stable for decades.

Principles Age Better Than Rules

A useful starting point is recognising the difference between principles and rules. Rules tend to be rigid, specific and intolerant of exceptions. Principles are broader and more adaptable to changing circumstances.

“Do not eat after 8pm” is a rule.

“Maintain eating habits that support your health goals and fit your lifestyle” is a principle.

“Never eat processed foods” is a rule.

“Prioritise foods that provide nutrition, satiety and enjoyment in appropriate balance” is a principle.

“Walk 10,000 steps every day” is a rule.

“Move regularly and avoid prolonged inactivity” is a principle.

Principles survive changes in age, career, parenthood, travel, illness and retirement in ways that rigid rules often struggle to achieve. A good principle can guide decisions for decades while adapting to entirely different stages of life.

Better Questions To Ask

This does not mean abandoning structure or dismissing evidence. Some health advice genuinely deserves to be followed closely, particularly when medical conditions are involved or professional guidance has been provided for a specific purpose. The point is simply that health recommendations exist within circumstances, goals and individual realities. Context is not a loophole that weakens good advice. More often, it is what makes good advice useful in the first place.

Perhaps a more useful question than “Is this advice true?” is “Who was this advice designed for?” Was it intended for an elite athlete or an office worker? A parent of young children or a university student? A healthy twenty-year-old or someone managing diabetes? Advice can be entirely evidence-based and still be inappropriate for the person trying to apply it.

Other questions can be equally valuable. What problem was this advice originally trying to solve? Under what circumstances does it work particularly well? What trade-offs come with following it? Is this a long-term principle or a short-term strategy? These questions often provide more insight than the advice itself.

Health becomes considerably less confusing once we stop searching for universal rules and start looking for useful principles instead. The goal is not to find instructions that apply perfectly to every person in every situation. The goal is to understand enough about ourselves and our circumstances to know which advice deserves our attention, which deserves adaptation and which was never

written for us in the first place.