Immune System What Is It and How Does it Work?

Jan 30 , 2021

Amher Delancel

Immune System What Is It and How Does it Work?

What is the immune system?

The immune system is the body's primary defence against the bacteria, viruses, fungi and parasites that try to cultivate infections there. Can even put the stop on rogue cells that could turn into cancer. Still, while most of us know where our circulatory and digestive systems are, the immune system is harder to pinpoint. Because its purpose is defence, it has to be everywhere. Every part of the bodies—including the lymphatic system, cardiovascular system, skin, GI tract, sexual reproductive tract and airways—is lined with immune cells.

How the immune system works

 Microbes are determined to make us sick. Our immune system leaps into action, releasing particular proteins, molecules and cells that chase down and kill the invader, wherever it may be. That process triggers an inflammatory response accompanied by redness, swelling, heat, and pain, which decline once the immune system has done its job. Instead, an autoimmune disease, such as rheumatoid arthritis or lupus, is a condition in which the immune system mistakenly attacks healthy cells.

How aging affects the immune system

Starting around age 65, the body production of immune cells drops. The immune system weakens people 65 and older account for about 90 per cent of flu- and pneumonia-related deaths each year. That is why it takes longer for wounds to heal in older people, and why cancer risk rises with age.

Strengthening defences

Once the immune system identified, it is time to boost it. Here are simple strategies that will help boost the immune system.

1. Work up a sweat.

Moderate-intensity exercise such as going for a walk can help the immune system fight respiratory viruses, according to a study Aim for at least 30 mins. a day.

2. Get enough sleep.

People who slept fewer than six hours per night were about four times more likely to develop a cold than people who got seven hours or more, according to a 2015 study. Lack of Sleep may also weaken the immune system's response to vaccines.

3. Load up on Vitamin D.

Most people do not get enough of this essential nutrient for immune system health. Take a daily supplement containing at least 600 IUs, or reach for vitamin D-fortified cereals or juices. Vitamin D is an important one for the immune system, too, so make sure to load up on citrus. 

4. Get vaccinated.

A vaccination imitates an infection, prompting the body to produce substances that will fight the disease if ever exposed to it in the future. Adults typically need an annual flu shot and a tetanus-diphtheria booster every ten years.

5. take up hobbies that reduce stress.

 A gentle form of martial arts, such as Tai Chi has shown to boost immunity to shingles. Singing in a choir may benefit health: researchers report the activity increases levels of cytokines, an immune system protein that helps the body fight illness, in cancer patients. Anything that nourishes the soul is likely to do some good for the body, too.

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