It begins with a subtle, familiar urge—a notification lighting up your smartphone screen, offering a discount, or simply the drifting aroma of sizzling oil and toasted flour from a local takeout spot. I can tell you without shame that I order a chunk of my groceries through a food delivery app. But the amount of food I order from restaurants through the app, I cannot share without shame. Ordering hot, ready-made meals online through food delivery services more or less means you are eating unhealthily and choosing to consume ultra-processed food (UPF). I am fully aware it is bad for my health, but do I stop? Well, I do try. From time to time, I delete the app. But truth be told, a bad customer or delivery service experience has usually been the reason for frustration behind deleting it—cutting back on ordering in, is often only a secondary thought. So I think I am addicted. Of course, as a society, we tend to take this kind of addiction lightly. It’s not the same as illicit drugs or even smoking cigarettes, our everyday minimising leads us to believe. It isn't explicitly branded with graphic health warnings, and we don’t equate a late-night delivery order to toxicity due to drug intake. Yet, behind this routine convenience lies a quiet, biological trap—a modern cycle of chemical addiction, physiological erosion, and psychological fatigue that is quietly reshaping millions of lives. Why can't we stop eating fast food? Part of why fast food is so easy to overeat comes down to how efficiently the body absorbs it. A 2023 study comparing two groups eating identical calorie totals found that a highly processed, low-fibre diet led to about 95 per cent of calories being absorbed, compared to only 89 per cent on a less processed, higher-fibre diet. Ultra-processed meals are purposefully engineered to maximise hyper-palatability. Farah Syed, a senior dietitian at Aga Khan University Hospital (AKUH), highlights the exact mechanism behind this pull. “Ultra-processed foods are designed to be highly palatable by combining sugar, salt, unhealthy fats, and flavor enhancers,” Syed explains. “This combination activates the brain's reward system, making us crave these foods and encouraging repeated consumption.” This deliberate formulation makes it easy to curse food delivery apps, which make it far too simple to order something with a few taps to satisfy those late-night snack-y cravings. Because these foods lack natural plant fibres and essential micronutrients, they bypass the body's natural satiety signals. The digestive tract breaks them down rapidly, causing an immediate surge in blood glucose. In response, the pancreas pumps out a massive wave of insulin to clear the sugar from the bloodstream. What follows is an inevitable blood sugar crash, leaving the body fatigued, unfocused, and signalling for another immediate fix of quick-acting carbohydrates. A little thinking is required before you grab and drop the packaged grocery items you usually reach for on your routine supermarket run. “The first thing to understand is that a long ingredients list does not automatically make a food unhealthy,” Dr Syed Faisal Masood clarified. A public health nutritional consultant and obesity medicine specialist, Dr Masood explained, “It is more useful to look at the overall nutritional profile of the product. The ingredients are listed in order of quantity, so if sugar, refined flour or unhealthy fats appear near the beginning of the list, that can be an important warning sign. Consumers should also be cautious of health claims such as ‘natural’, ‘multigrain’ or ‘low-fat’, because these terms do not necessarily mean that a product is healthy.” “It is also useful to check the amount of dietary fibre and protein. Products made mainly from refined flour or starch, with high amounts of added sugar or fat and very little fibre, are generally less filling and less nutritionally beneficial,” he added. The nutrient value of what we consume can either fill us up or leave us wanting for more. If we are eating fast food or ultra-processed snacks with little fibre or protein, we will likely still feel hungry sooner than we planned. We are not merely hungry; we are riding a continuous wave of metabolic spikes and crashes that masquerades as genuine appetite. In fact, Syed pointed out that, “Frequent intake [of fast food] reduces dietary fiber, negatively affects the gut microbiome, promotes systemic inflammation, and sharply increases the risk of chronic conditions like obesity, type 2 diabetes, heart disease, and high blood pressure.” Obesity management specialist Dr Masood shared the way processed food can cause havoc inside our bodies. “In the digestive system, a diet low in fibre can contribute to constipation and may negatively affect the diversity and activity of the gut microbiome,” he said. “Regular consumption of energy-dense ultra-processed foods can also make it easier to consume more calories than the body needs, contributing to weight gain and obesity.” We often think processed food will make us gain weight, and assume it is nothing serious like smoking, which is a known cause of cancer. However, the reality is far more severe. Research suggests that eating fast food more than twice a week makes a person 1.5 times more likely to develop heart disease compared to someone who rarely or never eats it. Furthermore, consuming fast food regularly has been linked to a doubled risk of insulin resistance, according to research published in The Lancet. The physical threats go even further. Evidence reveals a far more serious threat than mere weight gain. A first-of-its-kind study 2018 research surveying roughly 150,000 adults demonstrated that elevating ultra-processed food intake by just 10 per cent corresponds to a 12 per cent overall spike in cancer risk. Notably, this study into highly processed diets tied regular consumption to an 11 per cent higher probability of breast cancer, alongside a notable rise in colorectal cancer risk. Beyond physical health, the effects extend directly to the brain too. Researchers at Oregon Health and Science University found that trans fats can actually shrink gray matter over time. Separate research has linked higher fast food intake to a greater risk of depression as well. As Syed points out, “Emerging evidence directly connects high consumption of processed foods with an elevated risk of anxiety, depression, and poor sleep quality.” This profound psychological toll was vividly demonstrated in Netflix’s documentary Big Chicken: A Fast Food Conspiracy. In the film, British comedian Mo Gilligan undertook a 28-day challenge, consuming fried chicken three times a day for a total of 84 consecutive meals to investigate the ultra-processed poultry industry. While the experiment set out to explore fast-food culture and supply chains, it unexpectedly turned into a striking case study on its impact on mental health. Within just days, Gilligan experienced a drastic deterioration in his mental state. The initial joy of eating his favourite comfort food dissolved into profound lethargy, severe mood swings, brain fog, and persistent low mood. In candid confessionals, he broke down in tears, struggling to comprehend how quickly his outlook had darkened. Medical experts in the documentary explained to a shocked Gilligan that his sudden emotional crash was not an isolated emotional event, but the direct neurological result of high-fat, low-nutrient, ultra-processed food driving systemic inflammation and neurochemical disruptions. It demonstrated that heavily processed foods do not just alter our waistlines; they directly destabilise our mood, emotional resilience, and cognitive clarity. Fortunately, these damaging effects are reversible once habits change. Fast food meals tend to pack far more calories, sugar, and fat into a similar portion size compared to food made at home. Dropping processed meals and reducing weight can quickly begin reversing early markers of heart disease and high cholesterol. Blood sugar and insulin production also tend to stabilise once fast food is removed from the routine. Increased energy and improved focus commonly follow, since the body is no longer working through repeated blood sugar spikes and crashes. Dr Masood goes so far as to say we only need to watch what we eat to stay healthy. “The effects [of having processed food] depend on the type of processed food and how often it is consumed. Not all processed foods are harmful. Pasteurised milk, frozen vegetables and canned beans are processed but can still be nutritious,” he pointed out. The growing crisis in urban Pakistan This dietary transition is taking a heavy toll in urban centres across Pakistan. In urban Pakistan, ultra-processed food (UPF) intake is notably higher and reflects a rapid shift toward processed dietary habits. According to data from the South Asia Biobank published in The Lancet Regional Health - Southeast Asia, 41.4 per cent of urban Pakistani residents report consuming UPFs on any given day, compared to 39.4 per cent in rural areas. Among consumers in the highest household income tier—who predominantly reside in urban centers—UPF prevalence rises to 48.5 per cent. Furthermore, consumption is heavily concentrated among urban individuals with higher educational attainment, reaching 55 per cent for those with higher education compared to just 35.3 per cent among adults with no formal schooling. For urban adults who incorporate these foods into their daily routines, UPFs—led by products like sweetened beverages and packaged biscuits—account for 13 per cent to 17 per cent of total daily energy intake. The rapid rise of app-based delivery platforms and the proliferation of fast-food chains have made calorie-dense, nutrient-poor meals available at the touch of a button. This accessibility fuels a lifestyle where fresh, home-cooked food is routinely replaced by commercial, highly engineered alternatives. Government intervention Recognising the escalating burden of non-communicable diseases, regulatory bodies and public health advocate groups in Pakistan have begun taking concrete policy steps to enforce a healthier food environment: The Pakistan Standards and Quality Control Authority (PSQCA) adopted a mandatory national standard limiting industrially produced trans fats to less than two per cent of total fat across all food products, aligning with World Health Organisation best practices to remove harmful oils from ghee, spreads, and baked goods. Regulatory bodies like the Punjab Food Authority (PFA) and Sindh Food Authority (SFA) have increased safety checks on commercial food operators. They actively enforce hygiene guidelines, penalise reused oil practices, restrict the sale of carbonated drinks and unhealthy snacks in and around school zones, and mandate clearer restaurant standards. Public health experts and government agencies are advocating for front-of-pack nutrition warning labels. Clear visual markers on packaged goods warn consumers about excessive added sugar, high sodium, and saturated fats before purchase. Programmes led by provincial authorities aim to introduce strict nutritional guidelines in public institutions, hospitals, and school canteens to ensure accessible, minimally processed meal options. Breaking the addiction While policy regulations create essential structural safeguards, breaking a personal addiction to fast food requires intentional daily strategies. Overcoming the urge to tap on a delivery app involves resetting your food environment and daily habits. “Read the nutrition label and ingredient list. Limit products that are high in: added sugars (e.g., glucose syrup, high-fructose corn syrup), sodium (salt), saturated and trans fats (avoid partially hydrogenated oils), artificial sweeteners, colours, and preservatives when possible,” warned Syed. “Long ingredient lists with many unfamiliar additives often indicate a highly processed product.” Build meals around intact whole grains, fresh vegetables, legumes, fruits, and lean proteins. High-fiber foods slow down digestion, keeping blood sugar stable and curbing the sudden chemical cravings that drive impulse ordering. Convenience is fast food's primary selling point. Cooking larger quantities of wholesome meals over the weekend or keeping fresh, simple options ready in the fridge removes the urge to rely on delivery apps during late-night or busy work hours. Cutting out sodas, energy drinks, and packaged juices removes a major source of hidden sugars, helping stabilise daily energy and insulin levels. If you crave fried chicken or burgers, make them at home using fresh ingredients, whole-grain coatings, and controlled amounts of healthy fats like olive oil. Managing the quality of your ingredients significantly reduces systemic inflammation. Overcoming fast-food addiction is not simply a test of willpower; it is an effort to reclaim control over your body's chemistry in an environment designed to exploit it. By recognising how ultra-processed foods affect our mental state, metabolism, and long-term vitality, we can move away from convenience-driven habits. Combined with ongoing public health regulations and food safety reforms in Pakistan, choosing whole, nourishing foods is the single most effective step toward sustained physical health and clear mental focus.