PMC:5664696 / 21361-23125 JSONTXT

{"target":"https://pubannotation.org/docs/sourcedb/PMC/sourceid/5664696","sourcedb":"PMC","sourceid":"5664696","source_url":"https://www.ncbi.nlm.nih.gov/pmc/5664696","text":"5. Conclusions\nThis study used data from the Chinese population census and several environment and nutritional factors to examining the relationships among longevity and environmental and nutritional factors. The main finds were: The 85+/65+ ratio is higher in coastal and southern regions of China.\nClimate factors, sea fish consumption and the Se content of soil are related to longevity, while meat, freshwater fish consumption are less related to longevity.\nThe regression parameters in this study varied relative to geographic location; geographically weighted regression is more suited to reflecting the spatial characteristics of regression parameters, compared to stepwise multiple linear regression. During geographically weighted regression, the correlation coefficients improved significantly.\nThe combination of the humidity, altitude, and per capita sea fish consumption explained 66% and 68% of longevity in China in 2000 and 2010, respectively.\nModerate climate is more conducive to longevity, however, there is no significant difference in longevity between different sub-climatic types within moderate climate, and the relation between humidity and longevity is not always positive, the relation between altitude and longevity is not always negative. Nutritional factors like omega-3 in sea fish are crucial to longevity.\nAlthough our results can explain a great deal of general factors related to longevity, there remain inexplicable phenomena. For example, a minority of cities located in the Tibetan plateau also have a mid-range longevity ratio (the 85+/65+ ratio is between 0.06 and 0.07). Interestingly, the altitude there is \u003e3000 m and many find the climate intolerable. Examples such as these warrant further investigation and discussion.","divisions":[{"label":"title","span":{"begin":0,"end":14}},{"label":"p","span":{"begin":15,"end":1338}},{"label":"p","span":{"begin":230,"end":299}},{"label":"p","span":{"begin":300,"end":461}},{"label":"p","span":{"begin":462,"end":804}},{"label":"p","span":{"begin":805,"end":959}},{"label":"p","span":{"begin":960,"end":1338}}],"tracks":[]}