
The diets of Pacific Islanders have changed significantly since colonization, with the introduction of the Western diet – high in sugar, fat, and ultra-processed carbohydrates. Before colonization, Pacific Islanders in Guam and American Samoa enjoyed nutritious local staples like root crops, fresh vegetables, and lean meats. The arrival of Spanish colonizers brought the introduction of four-legged animals, and the post-World War II era provided a gateway to the Western diet and urbanization, including canned meats like Spam and corned beef. These processed foods became necessary for survival, but they also established unhealthy eating patterns that have contributed to rising rates of chronic diseases such as obesity and diabetes. Today, Pacific Islanders continue to rely on imported, highly processed foods, and traditional foods are often considered inferior to imported ones.
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What You'll Learn

Introduction of Western diet and unhealthy food products
The arrival of the Spanish colonizers marked the beginning of the shift away from traditional Pacific Island diets. The introduction of four-legged animals, such as deer and pigs, was the first step towards the disruption of the indigenous diet and lifestyle. The post-World War II era further accelerated the adoption of the Western diet and sedentary jobs. The Pacific Islanders faced food shortages and turned to shelf-stable, imported foods, such as canned meats, which were often high in fat and loaded with sugar.
The Western diet, with its ultra-processed carbohydrates and high amounts of saturated fat and sugar, replaced the nutritious local staples of root crops, fresh vegetables, and lean meats that were once abundant in the Pacific Islander diet. The shift from traditional, healthy diets to one filled with imported, highly processed foods has had a significant impact on the health of Pacific Islanders. Obesity, diabetes, and other chronic diseases are on the rise, and the Pacific Islanders now have some of the highest obesity rates in the world.
The transition to a Western diet was driven by several factors. Firstly, the belief that imported foods were superior to local foods took hold, and the reliance on foreign nations for economic development further entrenched this belief. Secondly, the post-World War II era left the islands with limited access to their own local produce, forcing them to turn to imported, shelf-stable goods. Additionally, the affordability and availability of imported foods played a significant role, with locally produced food products becoming prohibitively expensive for many.
Furthermore, the traditional values and beliefs related to food and physical activity have been lost over time, with methods of food preparation and storage no longer being passed down to newer generations. The shift towards sedentary jobs and the increased screen time in households have also contributed to lower activity levels among Pacific Islanders.
It is important to note that the impact of colonization on the diet of Pacific Islanders has been long-lasting, and expecting a simple transition back to traditional, healthy diets may not be feasible. The dietary globalization and nutrition transition occurring in the region are complex issues that require careful consideration and a deep understanding of the cultural context.
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Loss of traditional food preparation and storage methods
The arrival of colonizers in the Pacific Islands brought about significant changes to the diets and lifestyles of the indigenous people. One of the consequences was the loss of traditional food preparation and storage methods.
Before colonization, the Pacific Islanders engaged in subsistence living, which included activities like farming, fishing, and hunting for both men and women. Their diets were predominantly plant-based, supplemented with animal foods like fish, crustaceans, fruit bats, and birds. These traditional diets were nutrient-dense, with meals prepared healthily and oils used sparingly.
However, with the arrival of colonizers, particularly in the late 1800s, the "Western diet" was introduced. This diet was high in sugar, loaded with fats, and consisted of ultra-processed carbohydrates. The post-World War II era further accelerated this nutrition transition, as Pacific Islanders faced food shortages and had to rely on shelf-stable Western products, including canned meats.
The shift towards imported and processed foods was also driven by economic factors. Pacific Islanders started selling their local produce and purchasing imported foods, which were often cheaper and seen as a symbol of status. Additionally, the belief that imported foods were superior to local foods took hold, further increasing the reliance on foreign products. As a result, traditional food preparation and storage methods began to be lost.
Today, Pacific Islanders in territories like Guam and American Samoa continue to struggle with the impacts of these dietary changes. The increase in processed and low-nutrient foods has led to a rise in chronic diseases, including obesity and diabetes. While there are efforts to promote traditional diets and practices, the high cost of locally produced food products and the exclusion of US Pacific territories from certain food assistance programs pose significant challenges to reversing these dietary trends.
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Increased reliance on imported, processed foods
The arrival of US colonizers in the late 1800s brought with it the introduction of the "Western diet" to the Pacific Islands. This diet is typically high in sugar, loaded with fats, and made up of ultra-processed carbohydrates. As a result of colonisation, Pacific Islanders became increasingly reliant on imported, processed foods, which has had a significant impact on their health and culture.
The transition to a Western diet was accelerated by World War II, which caused severe food shortages in the Pacific Islands. In the wake of the war, Pacific Islanders were forced to turn to shelf-stable Western products, including canned meats like Spam. These imported, processed foods became a necessary source of food security, especially in times of natural disasters like typhoons.
Over time, imported products have come to dominate supermarket shelves, often priced cheaper than traditional foods. This has led to a decrease in the consumption of local, nutritious staples like root crops, fresh vegetables, and lean meats. Instead, Pacific Islanders have incorporated highly processed foods such as white flour, white sugar, margarine, mayonnaise, carbonated beverages, candies, cookies, and breakfast cereals into their local cuisine. On many islands, 80-90% of food is now imported, with imported rice even replacing locally grown staples in some areas.
The shift towards imported, processed foods has had significant health consequences for Pacific Islanders. The traditional Pacific Islander diet, rich in whole foods and prepared without excess cooking, was superior to the Western diet in many ways. It was high in fiber and low in fat, reducing the risk for various chronic diseases. However, the adoption of processed foods has led to a rise in obesity, diabetes, and other non-communicable chronic diseases. Studies have shown that returning to traditional diets can have positive health outcomes, but it is not a simple task due to the lasting impact of colonisation on dietary habits and the higher cost of locally produced foods.
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Rising rates of obesity and diabetes
The arrival of Western diets and the shift in dietary patterns have had a significant impact on the health of Pacific Islanders, with rising rates of obesity and diabetes becoming a pressing concern.
The late 1800s marked the beginning of dietary changes in the Pacific Islands with the arrival of US colonizers and their unhealthy food products. The "Western diet," characterized by high sugar and fat content and ultra-processed carbohydrates, gradually replaced the traditional nutritious diets of the islands. This transition was accelerated by World War II, as food shortages forced Pacific Islanders to rely on shelf-stable Western products, such as canned meats and processed foods.
Impact on Health: Rising Obesity and Diabetes Rates
The shift towards the Western diet has had detrimental effects on the health of Pacific Islanders, with a significant increase in obesity and diabetes rates. Obesity among Pacific Islanders is now among the highest in the world. The high prevalence of physical inactivity and the cultural preference towards heavier body types contribute to this issue. However, attitudes towards obesity are slowly changing, and it is increasingly being recognized as an unhealthy condition.
The traditional Pacific Islander diet, rich in starch, fresh fruits and vegetables, was associated with a lower risk of chronic diseases, including diabetes. In contrast, the Western diet, with its high consumption of processed foods, has led to an increase in non-traditional and low-nutrient food choices, directly contributing to the rise in diabetes cases. For example, in American Samoa, the prevalence of diabetes among adults increased from 21.5% in 2002 to nearly 33% in 2014, coinciding with increased sales of processed foods.
Addressing the Issue
Addressing the rising rates of obesity and diabetes requires a comprehensive approach that considers the cultural and socioeconomic factors influencing dietary choices. Small studies have shown that obese and diabetic individuals who return to traditional diets experience weight loss and improved blood sugar control. Additionally, promoting traditional foods and food-related practices can help revive cultural values and empower communities to make healthier choices.
However, it is important to acknowledge that simply expecting Pacific Islanders to revert to local, healthy ingredients neglects the lasting impact of colonization on their diets. Processed and imported foods have become deeply ingrained in the region's cuisine, and locally produced healthy foods are often prohibitively expensive. Efforts to improve dietary habits must address these economic disparities and focus on small, incremental changes that reduce the reliance on processed foods while embracing cultural values and traditions.
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Dietary globalization and nutrition transition
Dietary globalisation and nutrition transition refer to the shifts in diet and physical activity patterns that have occurred in Pacific Island cultures as a result of colonisation and modernisation. These changes have been influenced by cultural identity, migration, social-cultural factors, food security, globalisation, and trade.
Before colonisation, the diets of Pacific Islanders were largely based on whole foods found in nature, including root crops, fresh vegetables, lean meats, fruits, juices, nuts, and cooked greens. The traditional Hawaiian diet, for example, was high in starch, with moderate amounts of fat and protein. This diet was nutrient-dense and prepared in healthy ways, with minimal use of oils. It was also high in fibre and low in fat, reducing the risk for various chronic diseases.
However, with the arrival of colonisers in the late 1800s, the region's cuisine began to change. Colonisers introduced the "Western diet", characterised by high sugar and fat content and ultra-processed carbohydrates. This transition accelerated after World War II, as Pacific Islanders faced food shortages and turned to shelf-stable Western products like canned meats and imported goods. The post-World War II era also brought about urbanisation and sedentary lifestyles, further contributing to the nutrition transition.
Today, Pacific Islanders have incorporated processed foods like Spam, instant noodles, vegetable oils, ready-to-eat meals, and imported rice into their local cuisine. This shift has been influenced by the belief that imported foods are superior to local foods, and the economic dependence on foreign nations for development. As a result, traditional food preparation and storage methods, as well as physical activity patterns, are at risk of being lost. The increase in imported, highly processed, and low-nutrient foods has been linked to rising chronic diseases, particularly obesity and diabetes, among Pacific Islanders.
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Frequently asked questions
The traditional diet of Pacific Islanders consisted of whole foods found in nature, including root vegetables and starchy fruits, such as taro, cassava, yam, green bananas, and breadfruit. Their diet was also plentiful in fresh fruits, juices, nuts, and the cooked greens of starch vegetables.
The arrival of US colonizers in the late 1800s brought about the introduction of the "Western diet", which is high in sugar, loaded with fats, and made up of ultra-processed carbohydrates. The post-World War II era further accelerated this nutrition transition as Pacific Islanders faced food shortages and were forced to rely on shelf-stable Western products, including canned meats and imported produce.
The transition from traditional nutritious diets to a diet high in imported and highly processed foods has led to an increase in chronic diseases, particularly obesity, diabetes, heart disease, hypertension, and certain types of cancer.





































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