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Why do we have tears while crying?

We humans are emotional creatures and this is what separates us from other living beings. Emotions creates all sorts of feelings which can bring us joy , sadness , irritation, frustration , jubilation etc. Among these , Happiness and distress tends to be on top of the list. We all cry while in pain or…

Why do we feel hungry?

We can resist most of our feelings, be it anger, irritation , frustation or even happiness but when it comes to hunger pangs it gets really hard to control it for long. While we are hungry, we would need something to eat. Have you ever wondered why do we feel hungry and how does our…

Why do we get grey hair with age?

It is a well-known fact that human hairs began to turn grey and white as we grow old. There is no definite age when graying starts and even the amount of grey hair varies for each individual. But what is the mystery behind this? As we grow old what changes in our body that cause…

Why does fingernail grow faster than toenail?

Have you ever wondered why is it that the fingernail are trimmed almost once every week while when it comes to toenail they need to be looked not more than twice a month. There isn’t a perfect biological answer for this but no. of theories & experiments prove that it has to do with the…

Why is smoking injurious to health?

Though the first commercial cigarettes were made in 1865 in North Carolina , the history of smoking goes back to 5000 BC. People from different cultures and societies have indulged in smoking. A cigarette contains around 60-70 toxic chemicals which causes fatal diseases. What makes cigarette deadly? Composition of cigarette that contains Nicotine, Carbon Monoxide…

How does Anesthesia work?

Since early nineties, doctors and surgeons have been using anesthesia on patients while performing any operations or surgery. Anesthesia creates a feeling of numbness, unconsciousness and analgesia (lack of pain). There are two types of anesthesia: Local, and General Local Anesthesia is used to numb a specific part of the body. It blocks the nerve…

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