20 year long sauna study shows big impact on life expectancy

Researchers from Finland who studied the habits of middle-aged men found an interesting relationship between heart problems and sauna bathing.  In the study, over 2000 middle-aged men were observed over 20 years.

In that time men taking only 1 sauna per week were 3 times more likely to die from heart disease or other causes compared to those taking 4-7 saunas per week. The study also found that the longer the better –20 minute sauna sessions were twice as effective as 10 minutes ones.

I’ve not looked into the detail of the study so maybe the people taking more saunas were also more active (for example saunaing after a gym session) or shared some other characteristic, however the results were normalised for age and known coronary conditions at the start. I’ve also not compared it to mortality rates in Finland for those not taking saunas at all, but on the face of it it looks like good enough evidence that generally saunas are good for you and I’ll be using the one at the gym more often from now on.

sauna frequency cumulative hazard

Source: Association Between Sauna Bathing and Fatal Cardiovascular and All-Cause Mortality Events – JAMA Internal Medicine – Apr-2015

And thanks to Health Mate UK for pointing out that infrared sauna cabins have similar health benefits.

Laboratory Automation – only the white coats remain

If you think, like I did until a few minutes ago, that blood tests at hospitals went into a big room full of people with white coats and pipette tubes you’d be wrong… apart from the white coats!

Here’s a great case study video from Siemens showing their Aptio Automation system working at the NHS Tayside Ninewells Hospital, Dundee, UK. It combines lots of types of testing (e.g. hematology, immumolgoy, coagulation) with all the test tubes loaded onto trays and then in they go. The operators (in the white coats still) tell the system the tests required and then it’s over to the machines. The appropriate diagnostics are all done without human intervention and then stored away, with the ability to recall them for additional tests or retests.

At Ninewells they’re currently handling nearly 2,000 tubes per hour at peak times – and when that emergency sample comes in they load it onto the tray the same as any other but the tube is then fast tracked – in the video you see it literally overtaking others.

Siemens Aptio Automation system

The clinical director of the hospital says turnaround times reduced by about 25% which must have been from an already automated system as it just wouldn’t be physically possible to prepare, test and store that many sample manually in anywhere near the current processing time.

OK so it’s not yet the pin prick of blood with instant diagnosis which I’m waiting for but it’s a good start – and as always, once it’s a technology there’s nothing stopping it becoming smaller, faster and cheaper.

Video available on YouTube: Laboratory Automation Improving Patient Testing

Living Forever – an absolutely abhorrent aberration?

I’m currently reading Bryan Appleyard’s 2007 book “How to Live Forever or Die Trying” – half way in and so far it’s been mainly philosophical about the meaning of life, what “I” means to someone who can’t remember most of what they have done and whether the quest for immortality is morally correct.

Generally I don’t focus on these subjects for the Live Forever Club as it is aimed at people who have already decided they do want to and are looking for useful tips on how to make it possible. However I was chatting with a friend last night who falls into what I would call the “totally normal” camp. The term “radical life extension” means nothing to him, he’s not religious, and so has no preconceived views on living forever so I was very interested in his reaction on me setting up the club.

We went through the usual steps of is it possible, who would want to, but what if it was with your 20-something body, etc. After a few moments where I thought I’d tempted him he concluded that it would just not be right… an aberration of nature was the term he used. Basically to most people I’ve spoken to it doesn’t seem right that people might live forever.

But being a totally normal person, he also raised a couple more interesting points.

1. Many people, including non-religious ones, believe there is something after death and therefore aren’t trying to prevent it. I suggested that that is a big gamble as you don’t get a second chance, however he pointed out that I am also taking a gamble that there is not something beyond death which immortalists will never discover.

2. Are we already past the moral argument of radical life extension? Compared to the average life expectancy just  a few hundred years ago we already are. In the future will there be 200 year old people saying it’s immoral to live past 1000 even though they’re already benefiting from medical and technological improvements to have lived past the “natural” 100-ish years biological limit.

And his final parting comment – having said all that, ask me again when I’m on my death bed, as then it’s no longer a hypothetical argument.