Posted in Psychology & Medicine

Berry Aneurysm

Stroke is a disease often associated with the elderly, but this is not necessarily true. As much as 5% of the population carry a ticking time bomb in their brain, known as a berry aneurysm. An aneurysm is a weakening of the arterial wall, causing a localised ballooning of the vessel. A berry aneurysm is a common type of aneurysm where the ballooning resembles a berry. What is most troubling is that a large proportion of these aneurysms can present very early (usually congenital, meaning you are born with it), with one research suggesting that 1.3% of the population in the age group of 20 to 39 has a berry aneurysm. If this berry aneurysm was to burst, no matter how young and fit you are, you will bleed into the area around your brain (subarachnoid haemorrhage), suddenly develop a severe, crippling headache (“thunderclap headache”), become confused, show signs of stroke such as speech or movement problems, or simply drop dead.

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Fortunately, only 10% of people carrying a berry aneurysm suffer a ruptured aneurysm and subsequent brain bleed. The other 90% will carry on living their lives, without ever knowing that they had a time bomb in their brain.

Certain factors make the risk of the aneurysm bursting go up, such as high blood pressure, which can be caused by a stressful lifestyle or smoking. But in some cases, as explained above, even a healthy teenager could suddenly drop to the ground with a massive brain haemorrhage.

Berry aneurysms are only one of many ways death could strike unnoticed, no matter how young you may be. You could live a long and healthy life and die peacefully in your sleep when you are 90 years old, or you may have a stroke and drop dead in a few minutes’ time. For all you know, a bus might run you over tomorrow, with no warning whatsoever. Ergo, youth is not an excuse to waste the day you are given. You do not have to achieve something great, or be productive, but at least spend your day knowing that you are doing everything in your power to make yourself happy, without harming your health, your future or other people.

Carpe diem. Seize the day.

Posted in Philosophy

Carpe Diem

Countless teenagers claim that “you only live once” and use that as an excuse to live a reckless, risky life. Although most adults have the sense to recognise how idiotic and juvenile that sounds, it seems that they live their life as if there is only one chance as well. Too many people give up everything after a big failure messes up their lives, thinking that their life is “over”. For example, if a person has trained to become a mechanical engineer and one day has an accident that prevents them from ever working as an engineer again, the most common response is to fall into a pit of despair. They believe that they are only trained to do the one thing, and not doing it contradicts their life entirely. They are afraid that their life is over – that they are “dead”.

According to a certain statistic, we are capable of learning and mastering something new in 7 years. This means that between the ages of 11 and 88, you have no less than 11 opportunities to be great at something. Ergo, even if one “life” is over, you still have 10 opportunities to start a new life. Some people are too afraid to let one of their lives die and cling to the past, never moving forward to live on. But you have many lives. You do not live once.

Spend a life writing poems, spend a life building things. Spend a life looking for facts, spend a life looking for truth. Be a doctor, a musician, a detective, a chef, a businessman or a wanderer. No life is wasted as long as you are doing what you truly want, while not hurting yourself or others. Never forget that you have numerous lifetimes that are waiting to be seized by you. There will be times in life when you are hit with misfortune, when your life seems to crumbling around you. But that is just life. Realise that you still have the chance to start anew. And in the meantime, enjoy the lifetime you are living. Seize the day, and all the other lifetimes that are lying ahead of you.

Carpe diem.

(Idea and image fromhttp://www.smbc-comics.com/index.php?db=comics&id=2722#comic)

Posted in Science & Nature

Dihydrogen Monoxide

Many people know about the dangers of chemicals such as lead and dioxin, but there is lack of awareness of an even bigger killed chemical: dihydrogen monoxide. It is a colourless, odourless, tasteless chemical that is responsible for the death of hundreds of thousands of people around the world.

Most deaths caused by dihydrogen monoxide (DHMO) are by accidental inhalation, causing cerebral hypoxia. However, the dangers of DHMO do not end there. Its solid form can cause severe tissue damage after prolonged exposure, and both its gas and liquid forms can cause severe burns. It is possible to overdose on DHMO, with symptoms ranging from excessive diaphoresis and micturition, bloating, nausea, vomiting and body electrolyte imbalance such as hyponatraemia. For those who are dependent on it, withdrawal means certain death. DHMO has also been found in various types of tumours biopsied from terminal cancer patients.

Not only does DHMO have consequences on human health, it is also damaging for the environment. DHMO is the leading cause of the greenhouse effect (surpassing carbon dioxide), a key component of acid rain, accelerated corrosion and rusting of many metals and contributes to the erosion of natural landscapes. DHMO contamination is a real, global issue, with DHMO being detected in lakes, streams and reservoirs across the globe. DHMO has caused trillions of dollars of property damage in almost every country, especially in developing nations.

Despite the danger, DHMO is commonly found in the household, in the form of additives in food and drinks, cleaning products and even styrofoam. There are no regulation laws for DHMO and multi-national companies continue to dump waste DHMO into rivers and the ocean. It is astounding to see such a deadly chemical go unregulated.

If you have not caught on by now, dihydrogen monoxide’s chemical formula is H2O – also known as water. Technically speaking, there are no false statements in the above description. But even children know that water is not only (relatively) safe, but necessary for life. The report on “dihydrogen monoxide” originates from a 1997 science fair project by Nathan Zohner, who was 14 years old at the time. His project was titled “How Gullible Are We?” and involved presenting his report about “the dangers of DHMO” to fifty school students to see what their reaction would be. 43 students favoured banning it, 6 were undecided and only one recognised that DHMO was actually water. Even more surprising is that there are cases (such as in California in 2004), where city officials came close to banning the substance, falling for the hoax. This goes to show how gullible people can be in the face of what they do not know.

Posted in Life & Happiness

Success

If you ask a hundred children what their dream is, not a single one would say “I want to be successful”. But as children grow up and enter society, society advises them that dreams do not feed them. And so, children slowly lose their innocence and dreams and choose to chase success instead. Why? Because success will feed them and give them a secure future. It is uncommon to find a middle-aged person who has achieved their childhood dreams. The majority judge their dreams as unrealistic, put them away in a corner of their mind and sacrifice happiness to earn more money to feed the family. The child who wanted to become a painter who put the world on a canvas follows her parents’ advice and becomes a lawyer. The child who wanted to become an astronaut is working into the night at a bank so that he will be promoted. They devote themselves to work and strive to succeed. But when they are at their deathbed, the only thing they are left with is regrets.

In life, there is no success or failure. The only moment you will know whether you led a successful or failed life is when you are at your deathbed. No one else can judge whether you were a success or a failure. Whether you were rich, poor, famous, average, lived long or died prematurely, you were a success if you can end your life with this thought: “Yeah, I lived a happy life without regrets”.

Live without regrets.

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Posted in Psychology & Medicine

Sleeping Sickness

A woman travelling in Africa is bitten by what appears to be a mosquito. She swats the insect and keeps on going about her journey. The next week, she finds that she has a small nodule where she was bit. She is also feeling slightly unwell, with fever and fatigue. Over the following two weeks, her fever worsens (coming and going intermittently) and she notices large lumps along the back of her neck. By this stage, she is experiencing muscle and joint pain as well. After returning home from her trip, she finds that her symptoms have not resolved. On top of her fever and pains, she begins experiencing headaches, mood swings, lethargy, confusion, clumsiness, delayed response to pain, sleepiness during the day and insomnia at night. She begins to worry that something is wrong, but she believes that it is a bad flu and does not see a doctor. Her symptoms worsen with time (sleeping up to 15 hours a day), until one day, she falls asleep and does not wake up. She is taken to a hospital, where it is discovered she is in a coma. She dies within a week.

This is the typical presentation of sleeping sickness, also known as human African trypanosomiasis. It is an infectious disease caused by a protozoan parasite called Trypanosoma brucei (comes in two types: T. brucei rhodesiense (East African type) and T. brucei gambiense (West African type)), which is transmitted by tsetse flies – a bloodsucking fly endemic to sub-Saharan Africa (there are also case reports of sexual transmission between people). When infected, the parasite rapidly proliferates in the patient’s bloodstream. It is not detected by the host immune system, thanks to a surface protein called VSG. This allows it to spread through the patient swiftly and silently via the circulatory and lymphatic systems. The early symptoms (intermittent fever, rash, lymph node enlargement), typically presenting about a week or two after infection, are due to the parasite spreading through the blood and lymph. As the infection spreads, the parasites begin to invade the central nervous system (although in the West African type of the disease, patients often die from the toxic effects of the parasite replicating in the blood before they reach this stage).

As the infection spreads through the CNS, it causes the neurological symptoms described in the case. The sleepiness (from where the disease gets its name from) worsens as the disease progresses, with patients finding it difficult to wake up in the morning, even sleeping for over 20 hours. The sleepiness is caused by a chemical called tryptophol, which is produced by the parasite. Essentially, the neurological symptoms appear as if the person’s brain is slowing down, until they fall into a coma, resulting in death without treatment (usually within 2~3 years since the infection).

Sleeping sickness is invariably fatal unless treated early. Once the patient reaches the second stage (neurological phase), treatment becomes very difficult. The current first line treatment is a drug called melarsoprol, which is a form of arsenic. Because of its toxic nature, it is extremely dangerous and there is around an 8% chance of the patient dying from side effects. Fortunately, there are less dangerous and more effective treatments such as eflornithine (which only works for the West African type) being developed.

Posted in Philosophy

Fundamental Malevolence

Human beings are fundamentally evil. This was a theory concerning human nature put forward by Xunzi – a leading Chinese Confucian philosopher, along with Confucius and Mencius. Xunzi stated that human beings naturally seek out only their own interests and greed, envying and hating each other so much that they are bound to fight if left alone. He suggested that people needed to learn etiquette and culture themselves to correct this.

Xunzi’s philosophies are on a background of the chaotic setting of the Warring States Period. The Warring States Period was a period when China was split into many different countries, all warring with each other to gain dominance over each other’s lands. During these wars, Xunzi saw countless cases of people looting and killing each other, which led him to the conclusion that people are naturally selfish beings. He believed that human beings focus on their greed and self-preservation from the moment of birth. He also believed that leaving people without order would indubitably lead to social chaos. Thus, to effectively rule over the people, a leader must place limits such as laws, ethics, etiquette and culture.

From an evolutionary point of view, the theory of fundamental malevolence (성악설, sung ak sul) makes sense. Would a starving lion mourn the death of a baby zebra? Protecting one’s own interests is a great way to increase your chance of survival and propagating your genes.

The more you carefully observe people’s behaviour, the more credibility the theory seems to gain. Human beings are selfish beings who become jealous of others for having more than themselves, kill someone because they tried to take away their love and engage in fratricidal war because others do not share their beliefs. You as the reader may state that you cannot imagine hurting anyone, let alone taking a life. In that case, let us examine the following thought experiment.

One day, you are kidnapped. When you come about, you find that you are trapped in a pitch-black room, tied to a pole. The room appears to be completely empty and you cannot see or hear anything. Suddenly, you hear a voice coming from the other side of the room. The voice talks about how it will murder you in a violent, excruciating way, over and over. The voice continues to threaten you in a macabre way for three days. Just when you are near your breaking point from the overwhelming fear of imminent death, another voice appears. The voice says: “If you nominate someone you are close to that I can kill in your stead, I will let you go and not harm you in any way”. Would you have the courage to not give a name?

Posted in Psychology & Medicine

Hanging

Hanging is one of the most popular methods of execution and suicide throughout the ages. It is typically performed by fashioning a noose (most commonly with the eponymous hangman’s knot), placing it around the victim’s (or own) neck. The person then falls from a short height (e.g. dropped from a stand or stepping off a stool), upon which the force of the body pulling down causes the noose to tighten. This can kill a person via two ways. Firstly, if the force of the drop and the knot is strong enough, the sheer force of the noose tightening and the person being suspended by their neck will cause their neck to break. This causes spinal cord injury at the cervical level, where the brainstem lies. When the brainstem is damaged, the person loses control of autonomic processes such as breathing, causing instant death. Secondly, if the neck does not break, the person will be strangulated by the noose. This will kill the person through either choking (from airway obstruction) or brain ischaemia (as the carotid arteries are cut off). Pressure on the carotid artery may also cause something called a carotid reflex, where powerful nervous signals cause the heart to beat so slowly that it stops.

It is said that whether a person dies a quick, clean death via neck fracture or a slow, painful death via strangulation depends on how good the knot is. A hangman’s knot is made up of a loop with a series of coils above it. The more coils there are, the more friction it adds to the knot, making the noose harder to pull closed. A true hangman’s knot is defined as thirteen coils, which provides enough resistance to cause a neck fracture when a person falls. If there are fewer knots than that, the knot will tighten too quickly around the neck and not provide enough resistance to cause a neck fracture. This leads to strangulation, which is far more excruciating and a very inhumane way to die. If there are too many knots, there will be too much resistance and there is a risk of decapitation, leading to a very messy situation.

In forensic medicine, there are certain signs that reveal a victim was hung. For example, the C2 spine (second vertebrae in the neck) will exhibit a hangman’s fracture, where there is fractures on both sides. Fracture of the hyoid bone (a small bone below the chin) is also a classic sign of hanging. There will also be bruises along where the noose was and every sphincter would be open (which leads to immediate voiding of the bowels and bladder at the time of death). If the person died of strangulation rather than neck fracture, they will show signs of asphyxiation, such as blue lips (cyanosis). Another interesting result of hanging is something called a death erection. As the name suggests, it is when a corpse is found with an erection, most likely due to hanging. This is probably caused by the noose crushing the cerebellum, causing a reflex erection. The same phenomenon has been observed in women as well.

Posted in Life & Happiness

The Donkey And The Well

One day, a donkey fell in to a well. It cried piteously for hours while the farmer tried to figure out what to do. Ultimately, the farmer decided that the donkey was old and was nor worth saving. He planned to fill the well, as he had no need for it either. He invited his neighbours to come over and help him. Everyone grabbed a spade and shovelled dirt into the well.

The donkey was terrified; sooner or later he would literally be buried alive, with no food, water or air. It cried even more and begged the farmer to show mercy. The people ignored the animal’s neighing and screeching. The donkey was about to give up. There was no hope of getting out the well and soon it would die a slow, suffocating death. But then, it came up with a cunning plan. As the dirt slowly filled the well, the donkey stepped up on the mound of earth. Eventually, the mound grew high enough for it to jump out of the well. The donkey then kicked the farmer and galloped off into the sunset.

Life is bound to throw all kinds of dirt at you. But just because bad things happen, it does not mean you have to live a miserable life. When life throws a spadeful of dirt at you, brush it off and step over it instead of letting it weigh you down. With a positive mindset and determination to become happy, you can escape even when you fall into the darkest, deepest well of despair.

Posted in Psychology & Medicine

Five Stages Of Grief

Dr. Elisabeth Kübler-Ross was a psychiatrist who was greatly interested in the field of death and dying. She believed that medical students and doctors should be aware of how important the topic was. One of her major contributions to the field of medicine was a theory inspired by her work with terminally ill patients. Dr. Kübler-Ross discovered that patients who were given bad news often reacted in a rather predictable pattern of five “stages”. She also found that these theoretical stages of coping with dying also applied to other grieving processes, such as a child going through a divorce or grieving a break-up. It is important to note that these stages are not absolutely complete or chronological, but only a general theory of how people react to grief.

  1. Denial: A person’s initial response to any bad news or trauma is usually denial. Denial is a hardwired defence mechanism of the brain to protect the mind from trauma. However, it may hinder the process of coping, with some people being perpetually stuck in this stage while never fully coping with their grief. An example thought during this stage is “This can’t be happening to me”.
  2. Anger: Once the person overcomes their denial and recognises reality, they respond with anger. This is an externalisation response where the mind tries to deal with the bad news by lashing out. It can be seen as the mind’s response to the confusion that arises from receiving the bad news, which may be caused by cognitive dissonance arising from the conflict between denial and reality. Because people at this stage often lash out with rage and verbal abuse (sometimes even physical), they may be difficult to deal with. Thus, it is important to recognise that this is a natural response to grief and try to support them even though they are acting abusive. An example thought during this stage is “It’s unfair that this is happening to me”.
  3. Bargaining: When the anger settles down, a person attempts to deal with the grief with logic instead of emotions. They will try to negotiate with a higher power to delay their death, such as through praying. This stage shows how desperate and vulnerable the person is while trying to deal with the bad news. They will try to do anything to make the grief go away, or at least reduce it. However, this stage rarely produces any viable solutions. An example thought during this stage is “If I can have a few more years, I will do anything”.
  4. Depression: With both emotions and logic failing to protect them from the grief, the person will fall into a state of depression. Hope is lost and the person understands that resistance is futile (an example of learned helplessness). By this stage, the person has become quiet and withdrawn, often detaching themselves from family and friends. Ironically, trying to cheer a person up during this stage is ill-advised. It is more beneficial if the person can pull through the depression and process it to make it to the last stage of grief. An example thought during this stage is “Why bother, I’m going to die anyway”.
  5. Acceptance: The last stage of grief is not only accepting that death is unavoidable, but also recognising that there is still time before that. The person reaches a state of clarity and comes to term with the grief, achieving some inner peace. The time taken to reach this state varies and some people may never reach it at all. It is also important to note that just because the person receiving the bad news has accepted it, others around them may not have processed the grief. An example thought during this stage is “Everything is going to be okay”.
Posted in Science & Nature

Cattle Mutilation

For decades, there have been case reports by farmers who found mysteriously dead cattle with strange, surgically precise wounds. Strangely, these corpses were split open and most of their soft organs (e.g. eyes, tongues, intestine, genitals) had been removed. Even stranger, the corpses were completely drained of blood.

The mysterious, mutilated cattle corpses set off a diverse range of conspiracies of what could have caused such a bizarre phenomena. The most popular theories included: alien experimentation (explaining the surgical precision and lack of blood and organs), sacrifice by cults, vampires and the El Chupacabra (a mythological vampiric beast).

Cattle mutilation became so well-known that during the 70’s, it was properly investigated by the FBI. Of course, no evidence was found of aliens and vampires. As with most supernatural phenomena, cattle mutilation could be logically explained by science.

It was found that the cattle had simply died of natural causes, with no foul play involved (other than the occasional psychopaths attacking cattle). But how could natural death cause the surgical wounds, the missing organs and lack of blood? The answer is obvious when one thinks of what happens to animals after they die.

Scavengers such as foxes and buzzards often feast on decomposing corpses, cleanly removing the soft organs before they rot away (organs are the first to spoil). As scavengers usually bite into the corpses, this does not explain the clean wounds. This phenomena is due to insects also feasting on the corpse – a key part in putrefaction. Insects prefer softer tissue such as organs and ragged wounds, so after the insects are finished, wounds often look extremely clean. Also, putrefaction of tissue leads to massive gas production, causing bloating. Once this reaches a peak, the cattle corpse bursts like a balloon, causing clean tears in the abdomen. Lastly, the flies that were involved in cleaning away organs lay eggs, which hatch into maggots. Maggots immediately eat away the dead flesh and organs, even sucking up the blood that pooled at the bottom of the corpse. All of these factors combined results in what appears to be a mysterious alien bovine autopsy.

Although this may sound crazier than Chupacabras, the theory was actually tested in 1979 by a sheriff who kept receiving complaints about cattle mutilation. He took a dead cow, left it on a field and filmed it for 48 hours. The video clearly showed each step described above, proving that cattle mutilation was simply Mother Nature’s cruel, vicious way of returning a corpse back to the soil.