Dr K.K.Tan Specialist Clinic

Dr K.K.Tan Specialist Clinic Internal Medicine and Kidney Specialist, Clinical Hypnotherapist, Anti Ageing, Aesthetic and Regenerative Therapy. Established since 1994.

Specialist interest in promoting holistic medical therapy to wide range of internal medicine and kidney disorders. Utilising the latest anti ageing, aesthetic and regenerative medicines advances to complement the wellness of the patients. Certified clinical hypnotherapist. Accomplished public and motivational speaker.

*社交媒体成瘾:无尽滑动的陷阱*你是否有过这样的经历——原本只想“刷五分钟手机”,结果一抬头,一个小时悄然溜走。咖啡凉了,脖子酸了,你不禁纳闷:时间都去哪儿了?社交媒体的确有趣。它带来可爱的宠物视频、即时的新闻资讯、与旧友重逢的惊喜。但当“...
22/09/2025

*社交媒体成瘾:无尽滑动的陷阱*

你是否有过这样的经历——原本只想“刷五分钟手机”,结果一抬头,一个小时悄然溜走。咖啡凉了,脖子酸了,你不禁纳闷:时间都去哪儿了?

社交媒体的确有趣。它带来可爱的宠物视频、即时的新闻资讯、与旧友重逢的惊喜。但当“五分钟”每天演变成数小时,这已不仅仅是小小的习惯,而可能成为健康隐患。

医生们越来越多地把“社交媒体成瘾”视为一种真实存在的健康问题——它伤害的不只是大脑,还包括身体和人际关系。

《大脑与社交媒体》

每一次“点赞”或消息提醒,都会让大脑释放多巴胺——这正是我们吃巧克力、赢游戏时的快感来源。

问题在于:快感转瞬即逝,大脑便渴望再次刺激。于是,青少年因为发的贴文没有被点赞而焦虑;成年人则在会议或聚会时偷偷刷手机,甚至正在開車時也機不離手。这不是意志薄弱,而是生理机制:大脑已被重新“布线”,渴望持续的反馈循环。

医学表现:焦虑障碍、FOMO(害怕错过)、强迫性刷屏。

《“偷走”睡眠的蓝光》

身体需要休息,就像手机需要充电。但在床上滑手机会让大脑保持“白天模式”。屏幕蓝光会抑制褪黑素的分泌——这种激素正是催促我们入睡的“信号”。

结果呢?入睡困难、浅眠、第二天早晨易怒疲惫。长期下来,还会损害记忆、专注力,甚至提高高血压、胃炎、免疫力下降的风险。医生称之为“睡眠卫生不良”。

《从“低头族”到“滑屏拇指”》

长时间沉迷手机,对身体的伤害同样明显:

低头颈:长时间低头,颈肩僵硬疼痛。
腕管综合征 & 滑屏拇指:反复点击,手腕和手指酸痛。
数码眼疲劳:眼干、视物模糊、头痛。
久坐少动更会加重问题:体重增加、姿势不良、糖尿病和心脏病风险上升。

《情绪的过山车》

社交媒体展示的多是“高光时刻”——旅行、豪车、精修自拍。长久浸泡其中,平凡生活显得无趣。这种“社会比较陷阱”已被证实会引发焦虑与自卑。

更严重的是网络霸凌。一个恶意评论往往比上百个赞更刺痛人心。医生发现,越来越多青少年因网络欺凌而出现抑郁与压力症状。

《数字时代的人际疏离》

讽刺的是,社交媒体原本是为了“连接”,却常让我们更加疏远。夫妻为吃饭时刷手机争吵;一家人坐在一起,却各自沉迷于屏幕;朋友间的交流简化为几个表情符号。

这种现象甚至有个名字:低头族冷落(phubbing)。日积月累,这些小小的“忽视”会慢慢消磨掉人际的温度。

《为什么医生在意?》

与烟酒不同,社交媒体成瘾没有宿醉,没有过量警报。伤害往往悄悄积累:失眠、酸痛、焦虑、关系紧张。

虽然目前尚未被《精神障碍诊断与统计手册》(DSM-5)正式列为独立疾病,但它与“网络游戏障碍”十分相似。批评者担心“病理化”正常行为,但越来越多的研究表明:社交媒体成瘾确实造成身心损害,值得纳入预防与治疗体系。

《如何摆脱》(不用变隐士)

别担心,解决办法并不是删光所有App、与世隔绝。关键在于平衡。以下几个方法简单有效:

1. 数字宵禁:睡前至少一小时关闭所有设备。
2. 应用定时:利用手机自带功能限制使用时间。
3. 无手机用餐:让餐桌回归交流,而不是蓝光。
4. 用兴趣替代刷屏:阅读、运动、园艺、拼图。
5. 定期数字断食:尝试每周抽一天不碰社交媒体。

开始时或许不适应,但逐渐能帮大脑“重设”,养成更健康的习惯。

《结语:点赞与人生》

社交媒体本身并非洪水猛兽。它让我们获取知识、收获快乐、与世界紧密相连。但正如糖分和快餐——过量则伤身。

关键在于平衡。让社交媒体成为工具,而不是陷阱。下次你点开那个闪烁的图标时,不妨停一秒,问自己:我是为了快乐打开,还是仅仅为了满足大脑的渴求?

慎重选择,或许就能换来更好的睡眠、更平静的心态、更健康的关系,以及更多属于现实世界的时间。

#手机成瘾 #社交媒体成瘾 #焦虑 #数字健康

‘’Social Media Addiction: Scrolling Into Trouble‘’We’ve all been there—opening a social media app for “just five minutes...
22/09/2025

‘’Social Media Addiction: Scrolling Into Trouble‘’

We’ve all been there—opening a social media app for “just five minutes,” and suddenly an hour has vanished. The coffee is cold, your neck aches, and you’re wondering where the time went.

Social media is fun, no doubt. It gives us dog videos, instant news, and a chance to reconnect with old friends. But when those five minutes turn into hours every day, it’s more than just a harmless habit.

Doctors are starting to recognize “social media addiction” as a genuine health issue that affects the mind, body, and even relationships.

《The Brain on Social Media》

Every “like” or notification delivers a hit of dopamine, the brain’s reward chemical. It’s the same system triggered when we eat chocolate or win a game. That little burst of pleasure keeps us coming back for more.

But here’s the catch: the high fades quickly, so our brain demands another hit. Before long, checking your phone isn’t just funit feels necessary.

That’s why teenagers and even adults alike, panic or become anxious, when their post gets no likes, or why adults sneak a peek at Facebook in the middle of meetings or during friends gathering. This isn’t weakness; it’s biology. Our brains have been wired to crave the constant feedback loop that social media provides.

Medically, this manifests as: Anxiety Disorders – fear of missing out (FOMO) and compulsive scrolling.

《Sleep Thieves and Blue Light》

Our bodies need rest like phones need charging. But scrolling in bed keeps your brain on “day mode.” The blue light from screens blocks melatonin, the hormone that tells your body it’s time to sleep. Instead of drifting into dreamland, your brain stays alert, tricked into thinking it’s still daylight.

The result? Trouble falling asleep, shallow rest, moody and groggy mornings. Doctors call this “poor sleep hygiene.” Over time, it adds up—affecting memory, focus, hypertension, gastritis, even immune function.

《From Neck Pain to “Text Thumb”》

Social media addiction also creeps into our physical health. Hours hunched over screens bring problems such as:

Text neck pain and stiffness from tilting the head downward.

Carpal tunnel syndrome and text thumb – sore wrists and aching fingers from endless tapping.

Digital eye strain – dryness, blurred vision, and headaches.

Add in long sitting hours, and you’ve got another issue: less physical activity. That means weight gain, poor posture, and increased risk for conditions like diabetes and heart disease.

《The Emotional Roller Coaster》

Social media is a stage where people post their best moments—vacations, new cars, glowing selfies. Constant exposure to these “highlight reels” can make normal life feel dull. This social comparison trap is a proven trigger for anxiety and low self-esteem.

And then there’s cyberbullying, which leaves lasting scars, especially on young people. A single cruel comment can echo louder than a hundred compliments. Doctors are seeing more teens with stress and depression directly linked to online harassment.

《Relationships in the Digital Age》

Ironically, while social media is meant to connect us, it often drives us apart. Couples argue when one partner is glued to the screen during dinner. Families sit together, but everyone is lost in their own feed. Friends reduce conversations to emojis instead of real talks.

This phenomenon even has a name: phubbing—snubbing someone by focusing on your phone. Over time, these small moments of disconnection can erode the warmth of relationships.

《Why Doctors Care?》

Unlike smoking or alcohol, social media addiction doesn’t come with obvious warning signs. There’s no hangover, no overdose. The harm builds quietly: sleepless nights, aching joints, anxious minds, and strained relationships.

In addition, social media addiction lacks formal recognition in diagnostic manuals such as the DSM-5, though it is closely related to “Internet Gaming Disorder.” Critics argue that labeling it as an addiction medicalizes normal behavior. However, increasing evidence of its harmful mental and physical consequences suggests that it deserves structured recognition, preventive strategies, and treatment protocols.

That’s why medical experts are pushing for recognition of social media addiction as a genuine health issue. It may not involve a substance, but it rewires the brain and damages health just the same.

《How to Break Free 》
(Without Becoming a Hermit)

The good news is you don’t have to delete all your apps and live in the woods. Balance is possible.

Let me suggest a few simple but effective strategies:

1. Digital curfew – Power down all devices at least an hour before bedtime.

2. Set app timers – Many phones can track usage and remind you to log off.

3. Phone-free meals – Enjoy conversations without the glow of screens.

4. Replace scrolling with hobbies – Reading, sports, gardening, or even puzzles.

5. Plan digital detoxes – Try a 24-hour social media break once a week.

These steps may feel uncomfortable at first, but over time they help retrain the brain and restore healthier habits.

《Conclusion: Likes vs. Life》

Social media itself isn’t bad—it connects us, educates us, and sometimes even makes us laugh until we cry. But like sugar or fast food, too much can harm your health. The dangers are subtle but serious: poor sleep, aching bodies, anxious thoughts, and lonely hearts.

The secret is balance. Use social media as a tool, not a trap. The next time your finger hovers over that glowing icon, pause and ask yourself: Am I opening this app for joy—or just to feed my brain’s craving for another dopamine hit?

Choosing wisely could mean better sleep, calmer thoughts, healthier relationships, and more time for life beyond the screen.

"Let's Talk About Ghosts‘’ (in Hungry Ghosts Month)Tonight at midnight, the grand gate in hell is supposed to open wide ...
05/09/2025

"Let's Talk About Ghosts‘’
(in Hungry Ghosts Month)
Tonight at midnight, the grand gate in hell is supposed to open wide to release the hungry ghosts to wander about on Mother Earth. It is supposed to be a month-long holiday in a year for the captured ghosts.

During this month, some patients will avoid hospitalisation or surgery at all costs, unless it is necessary, for fear of ghostly unfavourable interference.

*A Doctor’s Perspective on Ghosts in Medical Practice*

When I first graduated from medical school, I thought my stethoscope and knowledge of physiology would explain every illness I encountered.

Now as a consultant physician, I was trained to interpret illness through the lenses of anatomy, physiology, and pathology. My textbooks never mentioned ghosts. Yet, in the real world of clinical practice, I have encountered them—not as supernatural beings, but as powerful beliefs that shape the way patients understand their suffering.

In my years of practice, I have come to realise that “ghosts” appear in clinics and hospital wards more often than we might expect— as beliefs, experiences, and memories that profoundly affect our patients.

*Meeting Ghosts Through Patients*

I remember a patient who came to the emergency department with chest tightness, sweating and shortness of breath. His whole chest was covered with talisman and prayer paraphernalia. Medically, his symptoms pointed toward panic attacks linked to stress. But he was convinced that a ghost had pressed on his chest while he slept.

Another patient, a widow, told me she often saw her late husband at the foot of her bed. She feared others would think she was “mad,” but for her, the vision was a source of comfort during grief.

I also remember, one evening, I was called to see an elderly man who refused to sleep in his ICU hospital bed. He whispered that the bed was haunted, that he could see a figure standing in the corner and kept pushing him off his bed. Medically, I suspected delirium due to infection. But to him, the ghost was real. Simply telling him “it isn’t true” would not have helped. I listened, reassured him, and arranged for treatment of his infection. The next day, the ghost had vanished along with his fever. That night taught me that addressing patients’ ghostly fears with respect is as important as prescribing antibiotics.

For doctors, these are not trivial stories. They are windows into the patient’s worldview, shaping how they seek help and how they respond to treatment.

*The Balancing Act*

The challenge lies in balance. To dismiss ghost beliefs as superstition risks alienating the patient. To embrace them uncritically may neglect serious medical conditions. Our task is to listen with respect, explore the meaning behind the experience, and gently guide patients toward safe, effective care. Sometimes this means explaining phenomena like sleep paralysis in plain terms. At other times, it means acknowledging the spiritual dimensions of loss and grief.

*Ghosts in the Doctor’s Own Life*

It would be untrue to say that ghosts belong only to patients. Doctors, too, are haunted. We carry the ghosts of patients we could not save, of errors we wish we had avoided, of cases that linger in memory long after the ward is quiet. These ghosts are not frightening apparitions but emotional imprints—reminders of our own vulnerability and humanity.

*Conclusion*

From a doctor’s perspective, ghosts in medical practice are less about the supernatural and more about meaning.

They are cultural, psychological, and emotional realities that cannot be ignored.

Sometimes they are hallucinations from illness; sometimes they are grief taking form; sometimes they are cultural beliefs that guide how people explain suffering. Whether real or symbolic, they are part of the patient’s reality—and to ignore them is to ignore part of the person.

They remind us that medicine is not only about curing disease but also about understanding the whole person—their fears, their beliefs, their grief, and their hopes. And in this way, ghosts, too, become part of the healing journey.

In medicine, we often say our duty is to cure sometimes, to relieve often, and to comfort always. Ghosts remind us of that last responsibility. By listening without judgment, by respecting what our patients see and feel, we honour not just their health, but their humanity.

"When is the best time for dinner?"Put your fork down at least three hours before bed, say the experts – but don’t stres...
18/06/2025

"When is the best time for dinner?"

Put your fork down at least three hours before bed, say the experts – but don’t stress if it’s your biggest meal of the day.

Few lifestyle choices come with as much cultural baggage as the best time to eat dinner.

There are all the national/ethnic stereotypes – Americans/Chinese eat early; Italians/Indians eat late; Spaniards/Malays eat even later – and in certain countries like Britain, the issue comes weighted with class too. (The later you eat, the posher you are, supposedly.)

An early dinner opens up the evening to do stuff with; a late dinner, conversely, can be a thrilling event in itself.

But is there a best time to eat dinner from a health perspective? Sort of.

What you certainly want to be doing is finishing your food at least three hours before you plan to go to sleep. If your usual bedtime is midnight, for example, you’ve got a 9 pm deadline.

This is because eating too late can disrupt the circadian rhythms, which govern how our body transitions from day to night and back again.

If you push your dinner later and later, the message to your system is that you should still be active. It might negatively affect your sleep – in the same way as being exposed to bright light before going to bed – and how efficiently you burn calories.

This is what “time-restricted eating” – a type of intermittent fasting that involves keeping all your day’s meals in a window of 12 hours or less – is concerned with.

If you extend your overnight fast between dinner and breakfast, then you’re allowing your body to go into the more catabolic phase, where you’re shifting to oxidising fats. You’re training the body to do what it’s designed to do: burn carbs when you’re eating carbs, and then burn fat when you’re not.

This can help with weight loss and is generally good for your metabolic health.

Should eating in a restricted window mean making your breakfast later or your dinner earlier?

The most common evening meal habit of long-lived centenarians is a “light dinner” early enough to then allow 12 hours before breakfast the following day.

Eating less later in the day sounds healthy too, at least if we believe the old saying instructing us to “eat breakfast like a king, lunch like a prince, and dinner like a pauper”.

This isn’t always realistic.

It’s quite difficult to eat a big breakfast because you just haven’t got the hunger, partly because your body has “started to export glucose out into the blood” as you wake up, so your energy levels are already high. And given people typically just have sandwiches for lunch, it’s inevitable that most of us “calorie load in the evening”.

Don’t stress about this, though, it’s fine as long as you give your body a “period of rest” by following it with a low-carb breakfast the next day.

If an early time-restricted eating window is unrealistic, then a later one is still better than letting your mealtimes sprawl across the entire day.

And if you’re doing exercise in the day – particularly the resistance-based kind, like weightlifting – then a big, carb, and protein-rich dinner can be just the thing to help your muscles recover.

Ultimately, the key thing is to keep your meals in a 12-hour window and finish dinner three hours before you go to bed.

If you do have a bigger dinner, and you’re sleeping well, your cholesterol and blood pressure are fine, then you’re good.

But if you’re sleeping poorly, and you have health problems, maybe you should move to have a bigger breakfast, a bigger lunch and a smaller dinner, which usually seems to be the healthiest pattern of all.

"Let's talk about love & betrayals.."A patient/friend visited me a week ago with a broken heart and emotionally drained....
17/03/2025

"Let's talk about love & betrayals.."

A patient/friend visited me a week ago with a broken heart and emotionally drained. With an unstable vital signs, he is at the verge of suicidal after weeks of unrelenting mental anguish. He was betrayed by his loved ones.

So why people betray? It is a very complicated topic and sometimes it is very personal. It also can be illogical and senseless. Therefore, only general advice and direction can be offered, but the final decision is still need to be made by himself.

According to expert in this field, a distinct pattern is becoming more obvious in sequential events that follow suit.

If someone has betrayed your trust once, there’s a strong likelihood that they will repeat that behavior—time and time again.

Trust is fragile, and once it’s broken, it’s difficult to repair. Forgiving disloyalty is not an act of love; it's an invitation for more disrespect.

It’s not a “mistake” they made—it’s a conscious decision. And when you allow that betrayal to go unaddressed, it signals that there are no real consequences for their actions. They know they can hurt you again, without fear of losing you.

True respect isn’t earned through forgiveness of harmful actions, but by setting clear boundaries and maintaining your own strength.

People, regardless of gender, respect those who hold firm to their principles and are not afraid to walk away when necessary. Tolerating betrayal only leads to the erosion of respect and trust.

Be the person who values loyalty above all else, who holds onto self-respect even when emotions pull you in a different direction.

Those who betray your trust once will never truly be yours—no matter how much they may say otherwise.

‘’Could fasting make you live longer?"Restricting calories could be the best way to slow your rate of ageing – as long a...
15/10/2024

‘’Could fasting make you live longer?"

Restricting calories could be the best way to slow your rate of ageing – as long as you have the right genes.

When it comes to slowing down ageing, we’ve tried everything under the Sun. But until there’s an anti-ageing pill breakthrough, scientists are trying to make headway with changes we can make in our everyday lives – including what we eat.

Now, a major new study claims to finally provide some answers to how your diet could help you live longer, but also what the downsides are.

The short answer? They say that dietary restriction (reducing your overall daily calories) has a bigger impact on expending your lifespan than doing an intermittent fasting diet.

Published in the journal Nature, the team tracked the health of 960 mice on different diets. They made sure there was a good range of genetic diversity across the group of mice to mimic the human population – though experts say we can’t assume the results apply to us.

This is a fascinating and counterintuitive result, but mice aren't just tiny people so we need to be very careful extrapolating these results to humans said by some longevity experts.

Nevertheless, one reason these findings are relevant is because we can't wait the necessary decades to perform a dietary restriction or fasting experiment in humans to see if it makes us live longer, so scientists have been looking for proxy measures to see if people get healthier in the short term.

During the much shorter lifespans of the mice, the researchers performed regular blood tests and other health evaluations. The mice were assigned one of five diets:

1. Eating freely
2. Only given 60 per cent of their baseline calories a day
3. Only given 80 per cent of their baseline calories
4. No food for one day per week (but eating freely the rest of the week)
5. The same as group 4, but fasting for two consecutive days a week.

The researchers discovered that the free-eating mice (group 1) lived an average of 25 months, while those on the intermittent fasting diets (groups 4 and 5) lived about 28 months.

But those in the low-calorie groups lived, on average, even longer: 30 months for the mice eating 80 per cent of their baseline calories, and a whopping 34 months for those on 60 per cent.

In fact, the very-low-calorie diets consistently extended the mice’s lifespans regardless of their body fat and glucose levels – which are usually considered good indicators of health and ageing.

Surprisingly, the mice who lived the longest lost the least weight overall. On the other side, the mice that lost the most weight had little energy, compromised immune and reproductive systems, and shorter lives.

The study really points to the importance of resilience. The most robust animals keep their weight on even in the face of stress and caloric restriction, and they are the ones that live the longest.

So what does this mean?

Essentially, if you’re wanting to extend your lifespan, you may want to hold back on extreme levels of weight loss to get there.

According to longevity expert, a more moderate level of calorie restriction may be a better approach to your long-term health.

Your genetics may get in the way. As always, it’s not as simple as it sounds.

Firstly, there was huge variation between individuals: even in the calorie-restriction groups, the mice’s lifespans ranged from a few months to four and a half years.

Secondly, the resilience to weight loss changed across individuals. In every group, the mice that lived the longest were the ones who were able to keep their immune cell health during periods of food stress, as well as those who didn’t lose body fat later in life.

The researchers think that genetic factors in your DNA that we are yet to identify could be behind the different impacts of diets on different people.

The study also reveals that metabolic markers like weight, body fat and glucose are perhaps not as useful as we thought when it comes to measuring whether calorie restriction is working in people – even if they remain very important indicators of health overall.

In summary, if you want to live a long time, there are things you can control within your lifetime, such as diet.

If you need to lose weight and you find fasting works better for you than dietary restriction, then go for it! We know that being overweight is bad for our healthy life expectancy.

Whether people whose weight is in the healthy range should be cutting back further, or fasting one or two days a week, is less clear – and, while fascinating, I don't think this study is going to put that incredibly long-lived debate to rest just yet.

So, Just eat less, be happy and live life. 🙂

‘’When is the best time to take your high blood pressure medication?"This is a common question asked by many patients. N...
02/09/2024

‘’When is the best time to take your high blood pressure medication?"

This is a common question asked by many patients. Now we have a more definite and scientific answer.

About one in three adults in the Malaysia has high blood pressure, also known as hypertension. It is also the third biggest risk factor for all disease in Malaysia after smoking and poor diet.

Although a high blood pressure does not cause symptoms, taking medicines can help prevent complications like heart disease, stroke, and kidney problems.

But questions remain around the timing of taking the blood pressure medication, with some experts saying people should take their medicine in the evening because night-time blood pressure is a better predictor of heart disease outcomes than daytime blood pressure.

We know that effective treatment with blood pressure lowering medication is vital to reduce people’s risk.

However expert found that previous studies looking at the impact of taking BP medications at night have shown mixed or confusing results.

To find out more, the researchers analysed the data from five trials, comparing night-time and morning administration of all BP-lowering medications.

The team concluded that "the timing of dosing does not affect outcomes”.

The timing of BP medication had no impact on secondary events including strokes, heart attacks and events related to uncontrolled hypertension, the researchers said.

Therefore the final conclusion made now is should let the patients take their once-daily BP-lowering medications at whatever time best suits their preferences and circumstances.

By bringing together large amounts of data from tens of thousands of trial participants, these important results should now put the question of when is best to take blood pressure medication to rest.

These results reinforce a key message that patients should take their blood pressure tablets at a time when they are most likely to REMEMBER, irrespective of the time of the day.

#高血壓

"SALT & KIDNEY DISEASE"Salt is a great one for adding flavour to a meal, it is also an electrolyte, an important nutrien...
05/05/2024

"SALT & KIDNEY DISEASE"

Salt is a great one for adding flavour to a meal, it is also an electrolyte, an important nutrient for our body, however, it is often demonised in kidney disease.

Salt is an essential nutrient, but it is seen as a contributing factor in developing hypertension. If you already have kidney disease, in addition to contributing to hypertension, it can add to an increase in glomerular pressure, which lead to more kidney trouble.

Glomeruli are tiny clusters of blood vessels within the kidneys, and they play an important role in filtering waste and fluid from the blood to produce urine. Glomerular pressure refers to the pressure seen in these blood vessels. Changes in this pressure can impact kidney function and blood pressure regulation.

If you consume processed, packaged foods, you may consume more salt than you realise.

Read food labels...
19/01/2024

Read food labels...

Again.. about our food..
18/11/2023

Again.. about our food..

"Jews & Arabs Share Common Ancestry"As fighting continues in the Middle East, a new genetic study shows that many Arabs ...
10/10/2023

"Jews & Arabs Share Common Ancestry"

As fighting continues in the Middle East, a new genetic study shows that many Arabs and Jews are closely related.

More than 70% of Jewish men and half of the Arab men whose DNA was studied inherited their Y chromosomes from the same paternal ancestors who lived in the region within the last few thousand years.

The results match historical accounts that some Moslem Arabs are descended from Christians and Jews who lived in the southern Levant, a region that includes Israel and the Sinai. They were descendants of a core population that lived in the area since prehistoric times.

And in a recent study of 1371 men from around the world, geneticist Michael Hammer of the University of Arizona in Tucson found that the Y chromosome in Middle Eastern Arabs was almost indistinguishable from that of Jews.

Intrigued by the genetic similarities between the two populations, geneticist Ariella Oppenheim of Hebrew University in Jerusalem, who collaborated on the earlier study, focused on Arab and Jewish men. Her team examined the Y chromosomes of 119 Ashkenazi and Sephardic Jews and 143 Israeli and Palestinian Arabs.

Many of the Jewish subjects were descended from ancestors who presumably originated in the Levant but dispersed throughout the world before returning to Israel in the past few generations; most of the Arab subjects could trace their ancestry to men who had lived in the region for centuries or longer.

The Y chromosomes of many of the men had key segments of DNA that were so similar that they clustered into just three of many groups known as haplogroups. Other short segments of DNA called microsatellites were similar enough to reveal that the men must have had common ancestors within the past several thousand years. The study, reported here at a Human Origins and Disease conference, will appear in an upcoming issue of Human Genetics.

Hammer praises the new study for "focusing in detail on the Jewish and Palestinian populations." Oppenheim's team found, for example, that Jews have mixed more with European populations, which makes sense because some of them lived in Europe during the last millennium.

"How to Spot a Potential Liar?"Trust is an important aspect of any relationship, whether it be personal or professional....
30/09/2023

"How to Spot a Potential Liar?"

Trust is an important aspect of any relationship, whether it be personal or professional. However, it can be difficult to determine if someone is trustworthy or not. Luckily, research has identified several red flags that can indicate that someone may not be trustworthy. Here are some of the most common red flags, according to science.

1. Inadequate eye contact

One of the most common red flags of untrustworthiness is a lack of eye contact. Studies have found that individuals who avoid eye contact are seen as less trustworthy than those who maintain eye contact. This may be because eye contact is associated with honesty and openness.

2. Inconsistent behavior

Another red flag is inconsistency in behavior. If someone behaves differently depending on who they are around or the situation, it may be a sign that they are not being honest or genuine.

3. Negative body language

Body language can also be a clue whether someone is trustworthy. Negative body language, such as crossed arms or a lack of smiles, can indicate that someone is defensive or hiding something.

4. Dishonesty

Perhaps the most obvious red flag of untrustworthiness is dishonesty. If someone lies or withholds information, it can be difficult to trust them.

5. Lack of empathy

Another sign that someone may not be trustworthy is a lack of empathy. People who are unable to understand or connect with others’ emotions may be more likely to engage in unethical behavior.

6. Selfish behavior

Self-centered behavior can also be a red flag of untrustworthiness. Individuals who are primarily focused on their own needs and desires may be less concerned about the needs of others and more likely to engage in behavior that is detrimental to others.

7. Excessive bragging

Excessive bragging or self-promotion can also be a sign that someone is not trustworthy. People who constantly talk about their accomplishments or skills may be more concerned with impressing others than being honest.

8. Unreliability

If someone is consistently unreliable, it can be a sign that they are not trustworthy. Individuals who make promises but fail to follow through may be more likely to engage in behavior that is dishonest or harmful.

9. Gossiping

Gossiping or talking behind someone’s back can also be a red flag of untrustworthiness. Individuals who engage in gossip may be more likely to spread rumors or information that is not true.

10. Lack of accountability

Finally, a lack of accountability can be a sign that someone is not trustworthy. If someone is unwilling to take responsibility for their actions or apologize when they have done something wrong, it can be difficult to trust them.

In conclusion, there are several red flags that can indicate that someone may not be trustworthy. These include a lack of eye contact, inconsistent behavior, negative body language, dishonesty, lack of empathy, self-centered behavior, excessive bragging, unreliability, gossiping, and lack of accountability. However, it is important to note that not all individuals who exhibit these behaviours are untrustworthy, and it is important to consider the context of the situation before making a judgment.

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