Chapter 8: Human Health and Diseases

Ans: People abusing plant secondary metabolites is not a new occurrence in society. A good example of this is morphine. It is a potent analgesic, which means it relieves pain.

In the medical field, it can be used as an anesthetizer or pain reliever in cases of severe injury.

However, we can witness a great number of people abusing it in our culture.

Codeine is another example. It's a secondary metabolite of the opium plant that's commonly found in cough syrups. However, we may witness many people using it in excess of the amount prescribed by doctors, which is known as drug misuse. Many additional substances, such as amphetamines, LSD, and others, are utilised in the medical field but frequently misused by drug addicts. Drug addiction generates hallucinations or functions as a stimulant for the user's body, but it is ultimately destructive to the person and the environment.

Ans: The biggest issue on the athletic field is a lack of energy in the athletes.

As a result, some athletes abuse a variety of substances in order to boost their energy and stamina, which will ultimately benefit them. Stimulants are the name for these medications.

Cannabinoids are medications that can be used to boost the body's activity. It relieves pain and aids athletes in strengthening their endurance. As a result, the International Olympic Committee has declared it illegal. The world anti-doping agency decides which drugs will be prohibited and which will not.

Ans: Metabolites are divided into two categories: primary and secondary. The question of primary and secondary metabolites now emerges.

Primary metabolites are substances that are directly engaged in the growth and development of the human organism. Our bodies cannot function properly without these. Secondary metabolites, on the other hand, are those created by bacteria, fungus, and plants, and we don't require many of them because they aren't involved in regular growth and development. Toxins, chemical compounds, oils, alkaloids, and other substances may be present.

Ans: Consumption of drugs and alcohol stimulates our bodies, causing the production of feel-good chemicals and possibly elevating our mood. As a result, many people use this to forget about a traumatic event or to live in a state of delusion.

However, long-term use of drugs and alcohol causes major health problems that can lead to death. Alcohol use causes cirrhosis of the liver, which is a fatal illness. Similarly, drug abuse causes a person's mental and physical state to deteriorate rapidly. Even when a person wishes to break these unhealthy behaviours in order to protect his body, he cannot bear the anguish and continues to do so till he dies. As a result, it is recommended that you do not begin using these substances under any circumstances.

Ans: In India, overcrowded areas are often unsanitary, making residents prone to diseases. Typhoid, dysentery, and cholera are all separate diseases with one thing in common: they all transmit via the faeco-oral route.

When a person drinks or eats water or food that has been contaminated by the excreta of another infected person, that person becomes infected. So, if an area is packed and no one uses the restroom, and there is a chance that the person's excreta would mingle with the excreta of others in a public water supply, diseases can spread.

Ans: Cannabinoids are the most important of all the medications. It induces hallucinations and aids in the forgetting of current concerns and the creation of a fantasy world. These come in a variety of forms, including bhang, hashish, charas, and ganja.

These are primarily derived from the cannabis Sativa plant's inflorescence. Other plant parts are also employed to make medications. These medications have an effect on the body's central nervous system (CNS), particularly the brain.

Ans: Better lifestyles in metropolitan cities result in less exposure to disease-causing organisms and, as a result, less developed immunity among residents. As a result, human civilization's infrastructure growth and deforestation result in less oxygen being released.

In addition to all of this, industry and the emissions of carbon dioxide from automobiles make the atmosphere extremely hazardous to human survival.

Our lungs are harmed by dust particles and smoke, and the most sensitive demographic, youngsters, suffer from allergies and asthma. Allergic reactions include rashes, watery eyes, and a runny nose, among others.

Ans: The core concepts of vaccination revolve around the immune system's memory. Our bodies have memory cells that remember the structure of diseases once they have infected us. When a second-time assault is performed, the memory is used again. During this stage, the body is well-prepared to combat pathogens. That is why, in the vaccination process, dead or low-potential pathogens are intentionally injected into the body. The body makes antibodies against the infection that has died and will be employed in future attacks. Yeast is used to make the hepatitis B vaccine.

Ans: Cancer is the uncontrolled development of cells.

Cells of cancer: Cancer divides rapidly and uncontrollably. Even contact inhibition is absent in cells. The length of one's life is undetermined.

Contact inhibition is seen in normal cells. Grow in a well-managed environment. And one's life expectancy is fixed.

Cell growth and development are usually tightly regulated. Normal cells have a feature called contact inhibition, which prevents them from growing uncontrollably because of the surrounding cells. Normal cells lose this characteristic and transform into malignant cells, which multiply rapidly and create a tumour. Carcinogens produce this conversion, which might be caused by physical, chemical, or biological reasons. For instance, x-rays, UV radiation, oncoviruses, and so on.

Ans: Allergy is a condition in which a person has a hypersensitive reaction when exposed to a certain material.

Allergies are caused by white blood cells such as mast cells and basophils. Mast cells release substances such as histamine and serotonin, which cause an allergic reaction when they come into contact with this material. A person with an allergy is aware of the chemicals he or she is allergic to, and should avoid those things to avoid developing an allergy.

For example, if a person has a pollen grain allergy, he or she should avoid coming close to the bloom to avoid direct pollen grain contact.