Research Caloric restriction (CR) or dietary restriction (DR) are helpful tools in understanding age and diet related health complications. In the 1972 Japan National Nutrition Survey it was determined that Okinawan adults consumed 83\% of what Japanese adults did and that Okinawan children consumed 62\% of what Japanese children consumed. Today the difference in life expectancy between Okinawan and mainland Japanese is decreasing  as the Okinawan are losing their dietary advantage. Recently, there is a decreasing trend in the life expectancy in Okinawa. This is evidenced by low birth weight, poor lactation, and the fact that the life expectancy for Okinawan men is lower than the national average. Le Bourg poses that the Okinawa diet has more of a deleterious effect then beneficial one, arguing that the low protein intake can cause harmful effects in later generations. Research done on animals showed that individuals with a lower protein consumption may be more vulnerable to pathogens. However, Gavrilova and Gavrilov reject this claim, arguing that dietary restrictions are a valid method for humans to extend their lives and that Okinawa has a naturally low infectious load. They instead hypothesize that the decrease in life expectancy has been due to westernization and erosion of the traditional diet. After World War II, Okinawans started to consume more calories. This in large part was due to the Americanization of the diet, such as with the rapid spread of fast food places. The spread of primarily American fast food chains was linked with an increase in cardiovascular diseases, much like the ones noted in Japanese migrants to the United States.
Research Caloric restriction (CR) or dietary restriction (DR) are helpful tools in understanding age and diet related health complications. In the 1972 Japan National Nutrition Survey it was determined that Okinawan adults consumed 83\% of what Japanese adults did and that Okinawan children consumed 62\% of what Japanese children consumed. Today the difference in life expectancy between Okinawan and mainland Japanese is decreasing , as the Okinawan diet changes; this is evidenced by low birth weight, poor lactation, and the fact that the life expectancy for Okinawan men is lower than the national average. Le Bourg poses that the Okinawa diet has more of a deleterious effect then beneficial one, arguing that the low protein intake can cause harmful effects in later generations. Research done on animals showed that individuals with a lower protein consumption may be more vulnerable to pathogens. However, Gavrilova and Gavrilov reject this claim, arguing that dietary restrictions are a valid method for humans to extend their lives and that Okinawa has a naturally low infectious load. They instead hypothesize that the decrease in life expectancy has been due to Westernization and erosion of the traditional diet. After World War II, Okinawans started to consume more calories. This in large part was due to the Americanization of the diet, such as with the rapid spread of fast food places. The spread of primarily American fast food chains was linked with an increase in cardiovascular diseases, much like the ones noted in Japanese migrants to the United States.
A
,
R
are losing their dietary advantage. Recently, there is a decreasing trend in the life expectancy in Okinawa. This is
diet changes; this is
R
westernization
Westernization