nostalgia

I’ve always thought this sounds a bit like a medical condition (oh dear, I’ve got a nasty case of nostalgia) and it turns out, I’m right – although it isn’t anything contagious. As you of course know, nostalgia is a noun (person, place or thing) that describes a sentimental longing or affection for the past.

The word itself hasn’t actually been around for all that long. It was coined by a Swiss physician named Johannes Hofer in the late 17th century (1688, to be specific). He used it to describe a medical condition observed in Swiss mercenaries. These mercenaries were a powerful infantry force made up of professional soldiers who served in foreign armies from the late Middle Ages into the Renaissance. Their proven battlefield capabilities made them sought-after troops-for-hire, especially among the military forces of the kings of France. The Swiss Constitution of 1874 banned the recruitment of Swiss citizens by foreign states, and these days there’s only one Swiss mercenary unit left – the nattily-dressed Swiss Guard at the Vatican.

Despite all this military success, when they were fighting away from home, Swiss mercenaries all got terribly homesick (bless them), pining for their beautiful Swiss landscapes. This was the medical condition that Hofer observed – symptoms were thought to include fainting, high fever and even death. Cases were so serious, and led to so many desertions, illnesses and deaths, that the mercenaries were banned from singing the ‘Kuhreihen’, a melody traditionally played by Swiss alpine herdsman as they drove their cattle to or from pasture, in case it pushed the mercenaries over the figurative edge.

After seeing all this extreme homesickness, Hofer combined two Greek words to describe it: ‘nostos’, meaning ‘homecoming’ (the word ‘nostos’ also refers to a theme used in Ancient Greek literature when an epic hero returns home, usually by sea) and ‘álgos’ meaning ‘pain’.

For many centuries, nostalgia was considered a debilitating and potentially fatal medical condition. But by the 1850s, it began to lose its status as a disease, and this meaning had almost completely vanished by the 1870s (although it was still recognised as such in both the First and Second World Wars, mainly by the American armed forces). Nowadays nostalgia is seen as an emotion rather than a condition – a yearning for the ‘good old days’, even if they actually often weren’t that great.

botuliform

Shaped like a sausage. That’s what it means. Because the Latin word for ‘sausage’ is ‘botulus’. I can’t believe it’s not more popular. Now, you might be thinking that’s because it sounds like ‘botulism’, a rare but serious illness that attacks the body's nerves and causes difficulty breathing and muscle paralysis until your heart stops and you die. And you would be right.

SAUSAGE

Botulism was first identified in 1822 by someone called Justinus Kerner, a German poet and doctor. His doctoring was apparently better than his poetrying (the only one I can find is about a saw – yes, the things you chop wood with), and when lots of his patients started dying of a horrible illness that paralysed every part of their bodies, he realised they’d all been chowing down on cheap sausages. So he decided to call this new illness botulism, or ‘sausage disease’. He also rightly worked out that these sausages must contain a toxin which he called ‘botulinum’.

Fast forward to 1895 and a funeral in Belgium. Three of the guests at the wake drop dead from food poisioning (which cut out the middleman funeral-wise), and the culprit was found to be some ham they’d all eaten. The ham was sent to the University of Ghent where someone put it under a microscope and identified the bacteria whodunnit. And in a strange case of medical serendipity, it turns out the little bastards were sausage-shaped.

Turn that frown upside down with some biological warfare

Now called ‘clostridium botulinum’, this bacteria is so bloody lethal that it’s up there with anthrax as one hell of a biological weapon, causing almost instant death by paralysis. So surely it must be banned, right? Wrong. Because a little bit of instant paralysis can actually be a very good thing, at least if you’re a woman (or man – but mainly woman) of a certain age or a Kardashian. Because sausage poison has since been rebranded as, you’ve guessed it, botox. The world is a funny place, isn’t it?

PS: If you’ve ever wondered why sausages are sometimes called hotdogs, it’s because in 19th-century America many people believed sausages were made of, you’ve guessed it, dog meat. So they called them hotdogs. Simple, but gross. And hopefully not true today.

proprioception

If I asked you how many senses we have, you’d probably say ‘five’, right? Taste, smell, sight, hearing and touch. But there’s actually another sixth sense, which has nothing to do with ghosts or Bruce Willis. It’s called proprioception.

(Before I get into this, I’m no scientist. So if I’ve got any details wrong in this article, please forgive me. And don’t shout at me.)

Proprioception, also known as kinaesthesia, is the sense that lets your brain know where your body is in space. Which basically means it’s how you know where and what your legs, arms and other extremities (stop it) are doing. You don’t need to look down at your feet to know where they are. That’s proprioception, right there.

So how does it work? Well, we all have cells called proprioceptors in our muscles and joints that process sensory information when our bodies move. And when we stretch our muscles and change the position of our joints, these cells send feedback to our brains, telling them where our arms, legs and body are at any given moment.

Without this sense, we wouldn’t be able to do anything much really. For example, if I have a gin and tonic, I don’t have to look at the glass as I move it to my mouth. That’s because my proprioceptors are sending information to my brain about where my hand is. I also don’t smash the glass into my own face (unless it’s the fourth or fifth gin and tonic), which is again thanks to my proprioceptive sense making sure my hand moves smoothly and at the right speed to get to my mouth.

Another good example is walking. You don’t need to look at your feet to lift them up, move them forward and put them back down again. That’s because proprioceptors send constant sensory information to your brain about where your hips, knees, ankles and toes are, and make sure you don’t fall over (most of the time). Proprioceptors are also constantly working in the background to make sure we use the right amount of force when we’re pulling or pushing something, and the right speed when we move our limbs. So we don’t end up breaking all the gin and tonics when we do a cheers, or punching people when we try to shake hands (unless we really don’t like them).

As a concept, proprioception has been around since 1557, where it was described by one Julius Caesar Scaliger (an Italian scholar and physician) as a ‘sense of locomotion’. In 1827, Charles Bell, a Scottish surgeon, anatomist, physiologist, neurologist, artist and philosophical theologian (and show-off, presumably), called it ‘muscle sense’. This was obviously deemed too easy to understand by the scientific community, and in 1906 the term ‘proprio-ception’ was coined by Charles Scott Sherrington, an English neurologist. This comes from the Latin word ‘proprius’, which means ‘one’s own’ or ‘individual’, and ‘capio’/‘capere’ meaning ‘to take’ or ‘grasp’. So it’s basically about grasping oneself in space. Which sounds like a sci-fi porn film, but you get the idea.

bezoar

You know when you come across a word you didn’t know, and then you keep seeing it everywhere? This is what happened to me with ‘bezoar’ this week (well, in two places – QI, and an episode of Audible’s excellent dramatisation of Neil Gaiman’s ‘The Sandman’). A bezoar is a solid mass of indigestible material that forms in the digestive tract. So far, so gross. But, for years many people have believed bezoars to have medicinal properties, and even that they’re full-on magical.

A ring made out of a bezoar. Why, WHY?

The word itself comes from the Persian language – specifically pād-zahr, which means ‘antidote’. In fact, if you were born in 11th-century Europe and were unfortunate enough to get poisoned, it’s likely you’d be presented with a bezoar in a glass of water by your friendly neighbourhood medicine person. That’s because they were believed to be universal antidotes that would cure any type of poison. This was proved to be utter bullshit in 1567 by a French surgeon called Ambroise Paré. He found a cook in the King’s court who’d been sentenced to death and chosen to be poisoned. He gave the unlucky chef a bezoar stone. As you can probably guess, the man died in agony seven hours after taking the poison. Merde.

It’s actually not all complete bunkum though – modern experiments have shown that bezoars can actually remove arsenic (I guess our French cook was poisoned with something other than arsenic – quel dommage).

There are lots of different types of bezoar. One of the most minging is a trichobezoar. That’s a bezoar made of undigested hair, often formed as a result of Rapunzel syndrome, a (thankfully) rare intestinal condition which comes about from eating too much of YOUR OWN HAIR. One of the largest trichobezoars I could find online was removed from the stomach of an 18-year-old woman in India and was a metre long, weighing in at 1.13kg (2.5lbs). If you’d like to feel a bit sick, you can check out the actual thing in this article. Wikipedia also lists a 4.5kg (9.9lbs) hairball which came out of a woman (ladies, what are you doing?!) in Chicago in 2006, but thankfully I couldn’t find a picture of that one (actually I didn’t look, as I didn’t think my stomach could handle it).