As the world are positive developing in present day,our life are being more and more better.from that ,some believe that life expectancy has generally increased over the past few decade only by eating a balanced diet .I definitely disargee with this opion.
First of all, this is truth to say that having a balanced diet can make our life expctancy more longer ,but not only just that.As scientist have declare that our life-span are decided by inside and outside factor.The sinside factor consists of genetic and our physique.Life expectancy is closely related to genes, stature, physical condition, and diseases can be inherited through genes.For example, an individual who born with cogenital disease will not live longer than a normal one.In addition,an obesity person having big body can have a better health than a fit one.
Outside factors such as lifestyle,diet, exercise, living environment, lifestyle, etc. all affect the physical, mental, health problems, etc. of the body, thereby prolonging or shortening life expectancy. Imagine an person who living in a good environment ,do excerise regularly and have a well lifestyle they can even live more than 90 years old.Now our expectaton of life are generally increased over the past few decade due to the good condition we have unlike in the past life-people did not know how to get a good habit, the right green lifestyle so their life-span are lower than present life is the inevitable thing.
All in all,expectation of life is affected by a lot of factors from inside to outside ,having a balanced diet is just a little element in that.Only have a good balanced diet and do nothing to improve our health, physical, mental and prevent disease cannot increased anything.