You see, there are three main excuses that our so-called experts use when they can't say "cause unknown" a 100% of the times, but 90% of the times that's what they say - "cause unknown, we don't know, we don't know.."; but they can't do that all the time so in 10% of the cases they say it's either germs, genes or old age! .. Well three of those are lies and they are designed to take away our responsibility.