18.6.11

The Kitava Study (1989) - 70% carb diet and no disease




by Staffan Lindeberg

"During an inventory in 1989, we found what appears to be one of the last populations on Earth with dietary habits matching what would have been the case for the population of Homo sapiens in their original habitats on the island of Kitava, one of the Trobriand Islands in Papua New Guinea's archipelago.

Diet
- natural foods diet of 70% carb, 20% fat, 10% protein

The residents of Kitava lived exclusively on root vegetables (yam, sweet potato, taro, tapioca), fruit (banana, papaya, pineapple, mango, guava, water melon, pumpkin), vegetables, fish and coconuts [27-29].

Less than 0.2% of the caloric intake came from Western food, such as edible fats, dairy products, sugar, cereals, and alcohol, compared with roughly 75% in Sweden [30]. The intake of vitamins, minerals and soluble fibre was therefore very high, while the total fat consumption was low, about 20 E% [28], as was the intake of salt (40-50 mmol Na/10 MJ compared with 100-250 in Sweden). Due to the high level of coconut consumption, saturated fat made up an equally large portion of the overall caloric intake as is the case in Sweden. However, lauric acid was the dominant dietary saturated fatty acid as opposed to palmitic acid in Sweden. Malnutrition and famine did not seem to occur.

No indications of coronary heart disease


We noted a lack of sudden cardiac death and exertion-related retrosternal chest pain among Kitava's 2,300 inhabitants (6% of which were 60-95 years old), as well as among the remaining 23,000 people on the Trobriand Islands [23, 24].

The main results of the Kitava study, that there is no ischaemic heart disease (and no stroke, see Chapter 4.2), are unanimously confirmed by medical experts with knowledge of the Trobriand Islands or other parts of Melanesia. Likewise, Jüptner noted no cases of angina pectoris, myocardial infarction or sudden death during his 5 years as a provincial doctor on the islands at the beginning of the 1960s, when the population was roughly 12,000. (Jüptner H, unpublished data). His experience is based partly on patients that visited him due to illness, and partly from systematic health examinations given in all the different villages at three separate times. The same observation was made by Schiefenhövel, physician and human ethologist from the Max Planck Institute in Munich (Schiefenhövel W, unpublished data). He can speak the language of the Trobrianders, Kilivila, and has his own hut on Kaileuna, one of the Trobriand Islands, where he examined close to 3,000 patients during his repeated visits over the course of close to 15 years. Like Jüptner, he is very familiar with the nature of cardiovascular disease and did not see any cases of the disease.

Evolution explains biology

Why does the same thing happen to a piece of food after it has been swallowed by humans of different ethnicity? Why is the anatomy and physiology of the gut virtually identical in a Chinese and an African? Why do all human have the same endocrine system and metabolism? You know the answer: because we share an ancestor from way back when. The experts estimate that our latest shared ancestors lived around 200,000 years ago in Africa.

Before that, during millions of years of evolution, the digestion and metabolism of our primate ancestors had been fine-tuning how it uses the available food substances in the most beneficial manner possible. Nobody would doubt that the best food for the human species would be the kind of food that was available in those days, rather than those that were introduced long after the construction of our physiology. Funny that nutrition authorities never say it loud.

Our primate ancestors have been consuming fruit, vegetables, nuts and insects for 50 million years or more. Meat was successively added, with a probable increase around 2 million years ago. Underground storage organs (roots, tubers, bulbs, corms) possibly become staple foods 1-2 million years ago. The variability was large: single plant foods were rarely available in excess, which reduced the risk of adverse reactions to bioactive substances in plant foods."