we got a bunch of comments telling us that  we neglected to mention one of the biggest  

killers of all: old age. But there’s a reason  we left it out: from a medical perspective,  

“dying of old age” doesn’t technically exist. Hi I’m David and this is MinuteEarth. As you  

get older, lots of not so good things happen to  your body: your tissues don’t heal as quickly,  

the walls of your blood vessels thicken,  your cells get worse at fixing errors,  

and your immune system gets weaker. So if you  fall down, you’re more likely to bleed internally;  

if plaque builds up in your arteries, it’s more  likely to cause a heart attack; if a cell mutates,  

you’re much more likely to get cancer; and  if you get a cold, it’s much more likely to  

turn into pneumonia. So while being old makes you  more vulnerable to all sorts of health problems,  

death itself is always caused by a specific  malady…”old age” alone can’t actually kill you. 

But you used to be able to die of old age – at  least officially. Really old people are pretty  

vulnerable, so they are often suffering from  lots of these potentially-fatal maladies at  

the end. When they do die, without doing  invasive post-mortem tests or autopsies,  

it's often difficult to figure out  which one struck the fatal blow,  

so “old age” was a useful catch-all cause  of death for doctors to use – hence the  

widespread use of the phrase. Nowadays, for  statistical, legal, and medical purposes,  

physicians in most places are required to fill out  forms that include a “specific cause of death”,  

so even if there are lots of different suspects,  they have to at least guess which one was the  

particular killer. But that’s not universal –  in 2022, the queen officially died of old age. 

Which does sound like a gentle way to go; that’s  another reason that so many of us think you can  

die of just being old. You’d probably rather  hear that your great grandma died because it  

was her time, rather than to know the gory details  about, say, the blood clot that moved to her brain  

and starved it of oxygen while she was sleeping,  which in turn caused her heart to stop beating. 

But while you might not want to hear about that,  it IS important information for doctors. After  

all, they need to know what tends to kill old  people in order to develop treatments that  

combat these ailments – or even just delay  their deadliness. So that in the future,  

old age isn’t something you die  from; it’s something you live for.

Of course, staying healthy isn’t just about  making sure your body keeps on ticking,  

it’s about taking care of yourself mentally as  well. That’s why we’re thrilled this video is  

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