Excessive Consumption of Fried Foods Poses Significant Long-Term Health Risks, Warns Expert

Jakarta, CNN Indonesia – The widespread culinary practice of preparing food by frying, a common sight in Indonesian households and street food stalls, has come under renewed scrutiny following stark warnings from prominent doctor and nutritionist dr. Tan Shot Yen. Her recent statements, highlighted by CNN Indonesia on Monday, April 20, 2026, underscore that this pervasive cooking method not only diminishes the nutritional integrity of food but also significantly elevates the risk of serious long-term health complications. This warning serves as a critical reminder for families to reassess their dietary habits and explore healthier culinary alternatives.

The Science Behind the Sizzle: Nutritional Degradation and Carcinogenic Compounds

Dr. Tan Shot Yen unequivocally stated that when food is fried, its nutritional content doesn’t merely disappear; instead, it undergoes a detrimental transformation, often converting into trans fats that are highly prejudicial to human health. This process is particularly pronounced with deep-frying, a technique involving submerging food entirely in hot oil, which dramatically alters the food’s molecular structure and composition. The intense heat involved, especially at temperatures typically exceeding 175°C (350°F), acts as a catalyst for a series of complex chemical reactions that are far from benign.

One of the most alarming consequences of high-temperature frying is the formation of carcinogenic substances. Among these are acrylamide and polycyclic aromatic hydrocarbons (PAHs). Acrylamide is a chemical compound that can form in certain starchy foods, such as potatoes and bread, during high-temperature cooking processes like frying, baking, roasting, and toasting. It is a byproduct of the Maillard reaction, a chemical reaction between amino acids (specifically asparagine) and reducing sugars that gives browned food its distinctive flavor and color. The International Agency for Research on Cancer (IARC) classifies acrylamide as a "probable human carcinogen" (Group 2A), based on studies in laboratory animals that have shown it can cause various types of cancer. While human studies are still ongoing and complex due to dietary variables, the precautionary principle suggests minimizing exposure.

Polycyclic Aromatic Hydrocarbons (PAHs), as detailed by the National Center for Biotechnology Information (NCBI), constitute a vast group of organic pollutants characterized by two or more fused benzene rings. These compounds are formed from the incomplete combustion of organic matter, and their presence in fried foods is a result of the high heat interacting with fats and proteins. PAHs are particularly concerning due to their well-documented carcinogenic and mutagenic properties in humans. Exposure to PAHs has been linked to an increased risk of cancers of the lung, skin, bladder, and gastrointestinal tract. The repeated use of cooking oil, common in many establishments to cut costs, further exacerbates this problem, as the oil degrades, accumulates these harmful compounds, and transfers them to subsequent batches of food.

Beyond carcinogens, the transformation into trans fats is another significant health concern. Trans fats, or trans fatty acids, are a type of unsaturated fat that occur in small amounts naturally but are predominantly formed through an industrial process called partial hydrogenation. While some trans fats occur naturally in meat and dairy, the trans fats formed during frying, especially deep-frying with vegetable oils, are structurally altered and behave differently in the body. They are notorious for raising low-density lipoprotein (LDL) cholesterol (the "bad" cholesterol) and lowering high-density lipoprotein (HDL) cholesterol (the "good" cholesterol), thereby significantly increasing the risk of coronary heart disease, stroke, and type 2 diabetes.

Impact on Child Development and Public Health

Dr. Tan’s warnings carry particular weight when considering the dietary habits of children. She emphasized that excessive consumption of fried foods, especially in formative years, can severely compromise nutrient absorption. Children’s bodies are rapidly developing and have high nutritional demands for growth, brain development, and immune system function. When their diet is dominated by fried items, which are often calorie-dense but nutrient-poor, their ability to absorb essential vitamins, minerals, and macronutrients is hindered.

This suboptimal nutrient absorption can precipitate a range of serious health issues in the long term. Malnutrition, manifesting as either undernutrition (stunting, wasting) or overnutrition (obesity), becomes a significant risk. Stunting, characterized by low height for age, is a marker of chronic undernutrition and is associated with irreversible cognitive and physical impairments. Wasting, low weight for height, indicates acute undernutrition. Paradoxically, the high calorie content of fried foods can also lead to childhood obesity, a growing epidemic globally and in Indonesia. Obese children are at a higher risk of developing chronic non-communicable diseases (NCDs) much earlier in life, including type 2 diabetes, hypertension, cardiovascular disease, and certain cancers.

The public health implications of a diet heavy in fried foods are far-reaching. According to data from the World Health Organization (WHO), NCDs are responsible for a significant proportion of premature deaths worldwide, and unhealthy diets are a leading risk factor. In Indonesia, like many developing nations, the "double burden of malnutrition" is evident, with undernutrition coexisting with rising rates of obesity and NCDs. This places an immense strain on the healthcare system, leading to increased medical costs, lost productivity, and a diminished quality of life for affected individuals. Addressing this dietary challenge is crucial for ensuring a healthier and more productive future generation.

Beyond the Fryer: Healthier Culinary Alternatives and Dietary Shifts

Given the substantial health risks associated with frying, Dr. Tan and global health organizations advocate for a conscious shift towards healthier cooking methods. As an alternative to frying, methods such as steaming, boiling, baking, roasting, and grilling (with careful preparation to avoid charring) are highly recommended. These techniques generally preserve nutrients more effectively and introduce fewer unhealthy fats.

For instance, steaming involves cooking food with steam, retaining moisture and many water-soluble vitamins that might otherwise leach into cooking water or degrade under high frying temperatures. Boiling is another simple method, especially suitable for vegetables and certain proteins, though care must be taken to minimize nutrient loss into the water. Baking and roasting, often done in an oven, use dry heat to cook food evenly, and if done with minimal added fats, can be a much healthier option.

In the Indonesian context, traditional dishes like "pepes" (food wrapped in banana leaves and steamed or grilled), various clear or creamy soups (e.g., "sayur bening," "soto"), and stews ("semur") offer excellent examples of nutrient-rich preparations that minimize reliance on excessive oil. These dishes often feature a balance of protein, vegetables, and complex carbohydrates, cooked in ways that enhance flavor without compromising health. Incorporating more of these traditional, healthier cooking styles into daily meals can significantly reduce the intake of harmful fats and calories.

The World Cancer Research Fund (WCRF) strongly supports these recommendations, emphasizing that how food is prepared and cooked profoundly impacts its health benefits. The WCRF highlights that frying, especially when food is battered or coated in flour, dramatically increases calorie content. As food fries, it loses water and absorbs oil, leading to a higher fat and caloric density compared to its unfried counterpart. This simple fact underscores why swapping fried items for steamed vegetables, grilled fish, or boiled chicken can make a substantial difference in one’s overall dietary quality and weight management efforts.

Timeline and Expert Consensus

The understanding of the adverse health effects of fried foods is not a recent phenomenon but rather an evolving body of scientific knowledge. Historically, frying has been a convenient and palatable method of cooking across many cultures. However, the scientific community began to seriously investigate the nutritional impact of cooking methods in the mid-20th century. Key milestones include:

• 1950s-1970s: Growing awareness of the link between dietary fat, cholesterol, and cardiovascular disease, leading to initial recommendations to reduce fat intake.
• 1980s-1990s: Increased scrutiny on trans fats, with mounting evidence of their detrimental effects on heart health.
• Early 2000s: Discovery of acrylamide formation in starchy foods cooked at high temperatures, sparking intensive research into its carcinogenic potential.
• Ongoing Research: Continuous studies on PAHs, advanced glycation end products (AGEs), and other harmful compounds formed during high-heat cooking, further solidifying the scientific basis for limiting fried food consumption.

Dr. Tan Shot Yen’s recent statement aligns perfectly with the consensus among global health organizations. The World Health Organization (WHO) consistently advises limiting intake of saturated and trans fats and promoting diets rich in fruits, vegetables, and whole grains. Similarly, national dietary guidelines, including those issued by the Indonesian Ministry of Health, emphasize balanced nutrition and healthier cooking methods.

For instance, a representative from the Indonesian Ministry of Health, in an inferred statement, might reiterate the importance of the "Isi Piringku" (My Plate Content) guideline, which promotes a balanced plate with proportional servings of staple foods, side dishes (protein), vegetables, and fruits, while also advocating for reduced sugar, salt, and fat intake. Academic researchers from nutrition departments at leading universities could add that continuous public education campaigns are vital to translate scientific findings into actionable dietary changes for the general population. They might emphasize that cultural preferences and economic factors need to be considered when designing effective health interventions, especially given the affordability and widespread availability of fried street food.

Implications and Future Outlook

The implications of widespread fried food consumption are profound, extending beyond individual health to societal well-being and economic stability. A population burdened by diet-related NCDs is less productive, places a heavier demand on healthcare resources, and faces a reduced quality of life. This calls for a multi-faceted approach involving individuals, families, the food industry, and policymakers.

• Individual and Family Responsibility: Educating oneself about healthier cooking practices and actively choosing alternatives is paramount. Simple swaps, like opting for grilled chicken instead of fried chicken, or steamed fish instead of fried fish, can accumulate significant health benefits over time. Parents play a crucial role in shaping children’s eating habits from an early age, establishing a foundation for lifelong health.
• Food Industry Role: The food industry has a responsibility to innovate and offer healthier options. This includes developing products with less saturated and trans fats, clearer labeling of nutritional content, and promoting healthier cooking methods in their prepared meals. Restaurants could expand their menus to feature more steamed, baked, or grilled options, making healthy choices more accessible and appealing.
• Policy and Public Health Campaigns: Governments and health organizations need to continue investing in robust public health campaigns that raise awareness about the risks of fried foods and promote healthier dietary patterns. This could involve school-based nutrition education programs, community workshops, and media campaigns that highlight the benefits of traditional, healthy cooking methods. Regulatory measures, such as stricter limits on trans fats in processed foods or guidelines for cooking oil use in food establishments, could also play a role.
• Economic Impact: While healthier cooking methods might sometimes be perceived as more time-consuming, they can lead to long-term economic benefits by reducing healthcare expenditures and improving national productivity.

In conclusion, dr. Tan Shot Yen’s warning serves as a critical call to action, urging a re-evaluation of the ubiquitous presence of fried foods in our diets. The scientific evidence is compelling, linking high-temperature frying to the formation of harmful compounds like trans fats, acrylamide, and PAHs, which contribute to chronic diseases and hinder child development. By embracing a more conscious approach to food preparation, prioritizing methods like steaming, boiling, baking, and roasting, individuals and families can significantly mitigate these risks. This collective shift towards healthier culinary practices is not merely a dietary recommendation but a vital investment in public health, promising a future of enhanced well-being and reduced disease burden for generations to come.