The consumption of tobacco by humans began many years ago and has taken many forms ranging from rolled tobacco leaves and pipes to cigarettes. Smoking is a habit that is easy to start, but is difficult to quit. Smoking has both short term effects such as bad breath, tooth and gum loss, premature ageing and weakened immune system and long term effects that impair the respiratory system and cardiovascular system. 

Smoking can cause and worsen diseases like cancer of lungs, throat, mouth, kidneys and blood and other chronic obstructive pulmonary diseases. Smokers also have a higher risk of conditions such as dementia, cataract, pulmonary fibrosis, psoriasis, osteoporosis and optic neuropathy. Smoking can also affect fertility, cause erectile disorders and speed up the onset of menopause.

It is said that a smoker s life expectancy is 10 years less than that of a non-smoker. There are three main components of cigarette smoke that can harm the body.

Nicotine: Nicotine is what makes cigarettes addictive and make smoking a habit. In the beginning, it may stimulate the brain but in the long run, your body can begin to crave for nicotine. If this craving is not fulfilled, it can cause irritability, restlessness, headaches and shortened attention span.
Tar: Tar in cigarettes contains many harmful chemicals and is deposited in the lungs. From here it enters the blood vessels and is carried to other parts of the body. In many ways, tar is akin to a poison.
Carbon monoxide: Carbon monoxide affects the blood s capacity to transport oxygen from the heart to the rest of the body. In the case of pregnant women, carbon monoxide can also reduce the amount of oxygen available to the growing foetus and hence cause complications in pregnancy. Children born to smokers are also said to have an increased risk of suffering from congenital defects and conditions like asthma.
The good news is that quitting it is possible and its benefits can be experienced right away. Within the first 72 hours of quitting, the bronchial tubes begin to open up and breathing becomes easier. If you stop smoking before the age of 50, you can reduce your risk of dying from smoking related complications by 50%. The most important part of quitting nicotine is your own determination and willpower. Nicotine replacement therapy in the form of gums, patches, lozenges and inhalers can also help deal with nicotine withdrawal symptoms and make the process easier.

Smoking - A Slow Poison?

With age, most body organs begin to deteriorate in their function. This happens to the brain also, thereby reducing the overall speed of functioning of most organs. While slowing of bodily movement is visible, the internal organs functioning also slows down, which is not that obvious. Memory loss or dementia is one of the main manifestations of this degeneration of the brain.

Alzheimer s is the most common form of dementia, and the associated symptoms includes reduced reasoning abilities and cognitive defects. Though it is seen only in the elderly, not all elderly people will have Alzheimer s. The overall quality of life of the affected person is reduced with difficulty remembering things that were recently learned. It is a progressive disease and as it gets more severe, a full-time caretaker may be required.

Causes: The brain cells are affected by protein masses known as plaques and tangles. These hamper the way communication between the brain cells happens as well as affect nutrition from reaching all parts of the brain. This leads to shrinking of the brain, eventually leading to memory loss and other problems. There is also a strong genetic linkage, as most people with Alzheimer s have the lipoprotein A gene.

Symptoms: Though memory loss is the most common symptom, there are other symptoms:

Being confused about places, people, and times
Inability to find the right words during conversations
Regular objects are misplaced
Becoming irritable, (in someone who was not so previously)
Mood swings
Personality changes
Inability to organise thoughts
Not able to make the right decisions
Repetitive talks and actions
Forgetfulness (not something the person always does)
Difficulty with numbers (again, not something calculations
Difficulty managing everyday tasks and minor problems
Suspicion of others (like immediate family members and friends)
Risk factors: While age is definitely a risk factor, the fact that not all aged people develop Alzheimer s is to be borne in mind. Other risk factors include the history of stroke, high cholesterol, high blood pressure, diabetes, smoking, obesity, and poor lifestyle choices.

Diagnosis: While there is no definitive way to diagnose Alzheimer s, symptoms along with brain scans and neuropsychological function testing are useful ways to confirm the diagnosis.

Treatment: This is aimed at two things reducing the rate of disease progression and treat (or reverse) symptoms if possible.

Cholinesterase inhibitors improve cellular communication in the brain and also manage depression and agitation. Memantine is used to slow the pace of disease progression.
In people with the disease, small changes are useful to help them with the symptoms. These include keeping essential things like keys and wallet in the same place, keep a daily diary to help them remember things, keep pictures of friends and family within visible distance.

Alzheimer's - An Overview!

When it comes to the brain and IQ, is bigger better? Does size really matter? Is there really a connection between the size of your brain and intelligence? With the help of findings by neurologists and scientists, we seek to find out!

Ailments and the brain: Scientists have found that children with autism have a brain that has grown in a disproportionate manner in the very first year of their life. This prevents the child from making connection in a normal manner. On the other hand, children and adolescents who suffer from Attention Deficit Hyperactivity Disorder or ADHD show sign of having a much smaller brain size. Many scientists have shown that the size of the brain shrinks as we age and this does not have any visible effect on our cognitive abilities.
It s all relative: The size of the brain does not really have a bearing on the way a person s cognition gets shaped. Even large mammals like elephants and whales are finally hunted and tamed by humans who have smaller brains in comparison. The brain is made up of billions of neurons, which need to function properly. It may be seen that scientists consider the brain mass in relation with the rest of the body so as to speculate about the cognitive abilities of the person. Why is this required? Large animals need a well functioning and proportionate brain size to control and run their organs with proper cognition for satisfactory results, which is what we humans seem to have done.
Neanderthal brain: Historically, the earliest man or the Neanderthals are said to have had larger brains than we do. These people are believed to have brains that are at least 10% larger than the brains that we have in our modern times. The shape of their brain was different too. They were also heavily muscled people which had a bearing on the size and shape of the brain and bodies as well as the lean tissue within the brain. They also survived very successfully for a period of over 200,000 years, which obviously points to some form of elevated cognition, as per many scientists.
Animals: While animals with small brains like lizards and reptiles do not perform too well on IQ tests, the animals with bigger brains like elephants and dolphins perform much better. But the medium sized brain of monkeys, lemurs and other animals are said to perform in the best manner. The correlation between the body size and the brain does not seem to hold good here, as per various researches.
So the verdict as per medical science and research stands divided!

Brain Size and Intelligence - Are the Two Related?

Causes and symptoms of anorexia

Anorexia is a common eating disorder which is identified by abnormally low body weight, intense fear of gaining weight and a distorted perception of body weight. The problem is not only related to your dietary patterns but it also related to your mental state. People with this disorder are generally self-conscious, have a low self-esteem and are overly concerned about their external appearance.

Causes of anorexia

Biological factors - These factors represent that anorexia can be congenital or it may have developed over time. Congenital means that disorder is hereditary in nature and is passed on from the parents to the offspring. On the other hand, it may develop in people who are more sensitive and have an inclination towards perfection.
Psychological factors - Anorexia can also be caused due to certain specific personality traits and emotions that might be possessed by you. For instance, anorexia is more likely to happen to young women who are really worried and conscious out the way they look externally. Additionally, people who are either emotionally not too strong or suffer from anxiety issues can develop this disorder easily.
Environmental factors - The type of a cultural set up you are living in also plays an important role in developing this disorder. For instance, the western culture is all about slim and fit people, whereas the oriental countries are not so bothered about the same.

Symptoms of Anorexia

Emotional symptoms - This category of symptoms includes behaviors and a thought process aimed towards losing weight and minimizing your food intake. Some of the symptoms belonging to this type include:

Forceful vomiting to lose calories
Staying hungry
Excessive physical activity or exercise
Denial of hunger
Social withdrawal
Irritability
Depressed moods

Physical symptoms - These symptoms are self-explanatory and are clearly visible on the human body. These include:

Extreme weight loss
Thin appearance
Abnormal blood count
Fatigue
Insomnia
Dizziness or fainting
Discoloration of the fingers
Hair that thins, breaks or falls out
Soft, downy hair covering the body
Constipation
Low blood pressure



Causes and Symptoms of Anorexia

Epilepsy is a disorder of the central nervous system, thus it is basically a neurological disorder. In this the nerve cell activity of the brain is disrupted and causes seizures along with episodes of unusual behavior along with the loss of consciousness. The symptoms of the seizure can vary and some people with epilepsy just stare blankly for few seconds when a seizure takes place, while some twitch their arms and legs repeatedly.

Symptoms of Epilepsy:
As epilepsy is caused by the abnormal activities in the brain cells, seizures affect the processes with which the brain coordinates. Some signs and symptoms are:

Staring blankly
Confusion which is temporary
Uncontrolled jerking movements of the legs and arms
Loss of awareness and consciousness
Psychic symptoms
Mostly the symptoms vary depending on the type of the seizure. The seizures are further classified into focal and generalized depending on which part of the brain shows abnormal activity.
Focal seizures
When seizures are due to the abnormal activity of the cells in just one area then it is known as focal seizures. These seizures are of two types:

Simple partial seizures or the focal seizures without loss of consciousness. These seizures basically alter the emotions and the things like change in smell, look, sound and taste. These also result in the involuntary jerking of the body like the legs and arms, with spontaneous sensory symptoms like the tingling and flashing of the lights.
Complex partial seizures or the focal dyscognitive seizures. These seizures have a loss of awareness and consciousness. One might just stare blankly into space in this seizure and performs repetitive activities like swallowing, chewing, walking in circles and chewing.
Generalized seizures
There are six types of generalized seizures. These are:

Absence seizures, also known as petit mal seizures, are commonly seen in children and are characterized by subtle body movements like lip smacking and eye blinking and staring blankly into space. These also cause loss of consciousness.
Tonic seizures lead to stiffening of the muscles. These affect the muscles of the legs and arms and also cause to fall to the ground.
Atonic seizures are also called as drop seizures. These cause loss of control in the muscles, thereby leading to collapse or fall.
Clonic seizures are the rhythmic and jerking muscle movements. These affect the arms, face and neck.
Myoclonic seizures appear as twitches in the arms and legs.
Tonic-clonic seizures also known as grand mal seizures are very dramatic and lead to body stiffening, abrupt loss of consciousness, shaking and loss of bladder control and tongue biting.

Epilepsy - How Seizures Affect It?

We all have mood swings but not all mood swings have the same intensity. People who have extreme mood swings ranging from depression to manic highs are said to be suffering from bipolar disorder. These extreme moods are known as episodes and usually, last for a few days or even a few weeks. A person suffering from bipolar disorder could have an episode several times a year. This is a very common psychological problem and can affect both children and adults. Though it cannot be cured, this disease can be managed with medication.

There are no known causes for bipolar disorder but genetics may play an important role in triggering Bipolar Disorder. Hence, if a parent or sibling suffers from this condition, you have a risk of developing it as well. An imbalance in the neurotransmitters in the brain may also play a part in the development of this condition. Stress or traumatic events like the loss of a loved one can also increase your risk of suffering from this condition. Given that mood swings affect almost each one of us, bipolar disorder can be difficult to diagnose. Some of the things to look out for are:

Change in self-esteem
Unusual talkativeness or quietness
Being increasingly prone to distractions
Decreased need for sleep
Agitation
Recklessness in terms of spending decisions, relationships etc
It must be kept in mind that a person must display at least 4 of the above symptoms simultaneously to be diagnosed as bipolar. Also, none of these symptoms should be a result or side effect of any kind of medication, drugs, alcohol or other intoxicants.

There are four main types of bipolar disorder:

Bipolar I: In such cases, the person has at least one episode of elevated moods and associated abnormal behaviour in his or her life. This may be preceded or followed by depressive episodes.
Bipolar II: In these cases, the person must have suffered from at least one depressive episode. It is very similar to bipolar I except that in bipolar II the highs never reach the manic stage.
Rapid Cycling: Some people can have 4 or more manic and depressive episodes a year. In such cases, they are said to be rapid cycling. This condition affects 10-20% of bipolar cases.
Mixed Bipolar: Usually, bipolar patients show mood swings that alternate between manic and depressive moods. However, sometimes a person may experience both elation and depression simultaneously or in rapid succession of each other. These cases are known as mixed bipolar.
Once diagnosed, bipolar disorder can be managed with a combination of medication and psychotherapy. In some cases, electroconvulsive therapy may also be needed.

All About Bipolar Disorder

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