OK. Now, try to classify what does it means the nervous system overloads? What is the common factor in all nervous system overloads? The common is that a person cannot handle information that he/she accepted (therefore, it always has a relative meaning). A possible conclusion - the reason of fast aging was information overload. To say shortly - information overload is a possible reason of any aging process (before you will tell me opposite in your opinion facts - try to convert everything to information to explain your cases. With this approach you can explain facts in my posts: Yogis, Rasputin's last day, etc.). If this is the truth - we can reverse aging by deleting of unnecessary information from the cellular level. Physical changes will happen automatically, because this information links with physical matter (the only way to store info). Physical matter cannot exist without linked info. It means, that an extra physical matter (old cells, etc.) will disappear according to the level of deleted info. Thus, according this possibility, we can look and feel as 20 during 300-400 years. If this is not enough for the beginning, please, consider that I tried to explain the theory as simple as I can.