Traditional meals are increasingly being replaced by international fast food in many countries.

In many countries people eat less traditional food than before and choose international fast food instead. In my opinion, this is a negative development for health and for culture.

It is true that fast food has some advantages. It is cheap, it is ready in five minutes, and it tastes the same in every restaurant, so people know exactly what they will receive. For a student or for a worker who has only thirty minutes for lunch, this is very convenient, and cooking a traditional dish sometimes takes two or three hours.

However, the disadvantages are more serious. Fast food usually contains a lot of fat, sugar and salt, and when people eat it every day, they gain weight and can develop diabetes or heart problems. The number of overweight children has increased in many countries for this reason.

In addition, traditional food is part of the culture of a nation. Recipes pass from grandmother to mother and from mother to daughter, and if young people stop cooking these dishes, this knowledge disappears. Traditional meals also bring the family together, because everybody sits at the table, while fast food is often eaten alone or in front of a screen.

In conclusion, although fast food saves time and money, I believe this change is negative because it damages people's health and destroys an important part of national culture.

Traditional cooking is increasingly displaced by international fast food in many countries. I regard this as a negative development, though the reasons for it have more to do with how people live than with what they prefer to eat.

The advantages are real and explain the trend. Fast food is inexpensive, immediate and predictable, and those qualities matter enormously to people working long or irregular hours. It is also worth acknowledging that traditional cuisine was historically sustained by a great deal of unpaid domestic labour, usually performed by women who now work outside the home. Praising the old arrangement without mentioning who cooked for three hours a day gives an incomplete account of what has actually changed.

Nevertheless, the consequences are serious. Food engineered to be cheap and appealing tends to be calorie-dense and low in fibre, and populations that have shifted towards it show consistent increases in obesity and related illness within a generation. The cultural loss is subtler but harder to reverse: culinary knowledge is transmitted by watching and repetition rather than by text, so once a generation stops cooking, what disappears is the judgement — how a dough should feel, when a sauce is ready — that no written recipe preserves.

In conclusion, I consider the trend negative, but it is a response to time pressure and low incomes rather than a failure of taste. Approaches that lecture people about their choices have failed consistently, whereas those that make cooking quicker and fresh ingredients cheaper have not.

The replacement of traditional meals by international fast food is usually discussed as though people had simply developed worse taste. They have not. The substitution tracks working hours and relative prices with considerable precision, and understanding it that way changes both the verdict and what follows from it. I regard the trend as negative, but as a structural outcome rather than a moral failure.

Begin with why it happens. Fast food is cheap, immediate and identical everywhere, and those three properties are worth a great deal to someone finishing a shift at nine in the evening. Traditional cooking, by contrast, has an opportunity cost that is invisible in most nostalgic accounts of it: it consumed several hours daily of somebody's unpaid labour, and that somebody was almost always a woman who now has employment of her own. Any argument that treats the older arrangement as straightforwardly better needs to say who is expected to resume that work, and it generally declines to.

The health consequences are nonetheless well established. Food optimised for cheapness, shelf life and immediate palatability converges on a similar profile — energy-dense, low in fibre, engineered to be easy to overconsume — and populations making this shift show rising obesity and metabolic disease within about a generation. That is not a claim about any single meal but about what happens when the default option changes.

The cultural loss is more interesting than it first appears, because part of it is recoverable and part is not. Recipes are written down and survive perfectly well. What does not survive is tacit knowledge: how a dough should feel, when a stew has reduced enough, which substitution works and which ruins the dish. This is learned by standing beside someone doing it, so a single generation's interruption breaks a chain that a cookbook cannot repair. When people say a cuisine has been lost while the recipes still exist, this is usually what they mean.

My verdict is therefore negative, but the diagnosis matters more than the verdict. If the cause is time scarcity and price, then exhortation — campaigns urging people to cook properly — addresses nothing, which is broadly what the evidence of the last thirty years shows. What has changed behaviour is making the better option easier and cheaper: shorter working hours, affordable fresh ingredients, and cooking taught as a practical skill rather than assumed to be absorbed at home. The trend is a symptom, and treating symptoms as choices is why so little has worked.