Immune System Function

Immune system: It’s functions, signs of weakness, Immunity booster herbs, supplements and foods.

Immune system function and definition | Types of Immune system | Signs of weak Immune system | Supplements and herbs for immune system | Immune system boosters food |

What is Immune system?

Immune system is a combination of organs, tissues, cells and molecules whose primary function is to identify and kill the microorganisms, tumors and remove toxins to protect us against diseases.

It not only kills harmful microorganisms but also it stores the data of each one of them, In case if you encounter with same in future.

There are two main subsystems of immune system such as

1) Innate immune system

2) Adaptive immune system

Innate Immune System

This immune system includes cells which are non specific.

Hence it can not distinguish one invader with other invaders.

It reacts very quickly as soon as it locates infectious pathogens.

This immune system doesn’t have memory hence it treats same pathogens in exact same way irrespective of how many times that pathogen previously seen.

It includes chemical and physical barriers which acts like line of defense and also prevents infectious agents to enter in our system

Barriers Used are

Skin – sweat, desquamation, flushing and organic acids.

Gastrointestinal tract – Gastric acids, Bile acids, gut flora, digestive enzymes, peristalsis etc.

Respiratory – Mucociliary escalator, surfactant, defensins

Eyes – Tears

BloodBrain – Endothelial cells, P-glycoprotein.

Adaptive Immune System

This immune system function is very specific towards each and every invaders.

It’s cells has receptors which differentiates every invaders with other invaders which are  called as antigens.

Also these receptors can differentiate between friendly bacteria and potentially danger pathogens.

This immune system takes time to activate because it activates highly specific cells to kill particular pathogens.

The advantage of this immune system over innate immune system is that it has immunological memory.

The activated cells undergo clonal expansion in which they massively proliferate.

That means every time they see same invader, they again get quickly expanded to give stronger and faster response.

Once the pathogen is destroyed, Most of these clonally expanded cells get die off. It is called as clonal deletion.

Some of this cells lives as a memory cells, As in case same pathogen appears again. The cells can be expanded easily.

Both of these immune systems has humoral immunity and cell mediated immunity.

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Signs of weak Immune system

There are various disorders in immune system, And each one has it’s unique symptoms that can be chronic or frequent.

Some common symptoms can include:

  • Pink eye
  • Sinus infections
  • Colds
  • Diarrhea
  • Pneumonia
  • Yeast infections

If you are suffering from any of the above problems, And even after the treatment you don’t get relief.

Then it might be the signs of immunodeficiency disorder i.e weak immune system.

For preventing immunodeficiency disorder, The most important factor is sleep.

Sleep is very effective for healthy immune system. Mayo clinic says, Adults requires at least 8 hours of sleep at night.

If you know you have weak immune system, Then you should stay away from peoples who are sick.

Supplements and herbs for Immune system

The tried and tested method for boosting immune health is by adding healthy daily dose of vitamin C in diet.

Apart from vitamin C you can add supplements such as


Omega-3s has ability to synthesize signal molecules which helps to lower cell stress response

Research shows that omega-3s fatty acids eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) can promote
immune health by reducing cell stress response.

This leads to optimal health and enhancement of function of immune system.

Also Omega-3s has ability to synthesize signal molecules which helps to lower cell stress response.

DHA and EPA helps your body to come to normal after the infectious threat is passed.

Also it is necessary to maintain the ratio of Omega-3s and Omega-6s.

By incorporating supplements like (fatty fish, algae oil, or fish oil) we can easily achieve that healthy ratio.

You can online buy top quality Omega-3s from Amazon.


Probiotics are the live microorganisms, That when consumed in controlled manner. It Plays an important role in overall immune health.

It inhibits the growth of deadly pathogens by competing with them for nutrients which promotes growth and proliferation.

Probiotics have shown to enhance the barrier functions.

Probiotics supports the immune health by stimulating immune cells activity.

You can online buy top quality Probiotics from Amazon.

Vitamin D

Vitamin D is very important for calcium absorption and bone health

Vitamin D is very important for calcium absorption and bone health.

It can also modulate both innate and adaptive  immune systems.

It stimulates production of antimicrobial peptides (AMP).

These peptides are helpful for lots of anti-microbial and anti-viral activities.

Deficiency of vitamin D increases autoimmunity and make you more susceptible to infections, colds and flu.

Due to lack of exposure to sun, using sun screens etc. lots of peoples found deficient in vitamin D.

For avoiding vitamin D deficiency, Either consume diet with adequate sources of  vitamin D or take necessary vitamin D supplements.

Buy top quality Vitamin D online from Amazon.


Quality sleep Fastingskills

Melatonin is the hormone produced by brain. It’s primary function is to facilitate sleep by communicating with body when it’s dark outside.

It stimulates innate immune cell activity. Hence it is known as immune boosting dietary factor.

During sleep, Your immune system releases cytokines molecules which sends other immune cells where infection is present to regulate it’s behaviour.

Also sleep deprivation can reduce the production of cytokines, T cells and antibodies which fights with infection.

Buy top quality Melatonin online from Amazon now.


Curcumin is considered as very powerful antioxidant

Curcumin is an orange – yellow spice extracted from the turmeric plant.

Traditionally it is known for its benefits of anti inflammatory effects.

Curcumin is considered as very powerful antioxidant. It can support to cardiovascular health, brain function, mental health, and lastly immune system health.

It enhances the response of antibodies, And also promotes the immune system response of lymphocytes (white blood cells)

Also increases B cell proliferation in the intestine and reduces production of proinflammatory cytokines.

Buy top quality Curcumin online from Amazon now.

Herbs for Immune system

Astragalus Root

It is a powerful herb used in chinese medicine, Because it has antibacterial and anti-inflammatory properties.

In a recent study of march 2020, Shown that consuming astragalus to prevent infection even in the new coronavirus SARS-CoV-2 is common nowadays.

Angelica Root

This herb is mostly found in Russia and Scandinavia.

Angelica root is also used in chinese medicine to boost the immune system and treatment of respiratory illnesses and cold symptoms.

Honey and Ginger

Both are very powerful antioxidant and also have antibacterial and anti-inflammatory properties.

Honey helps to activate immune system response to infection quickly.

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Immune System Booster Foods

If you want to stay away from doctor and avoid common cold, flu and other infections.

Then you should either visit grocery stores or online at amazon fresh and buy below listed powerful immune system booster foods right now.

1) Citrus fruits

Citrus fruits boosts immune system

Vitamin C is very important as it increases production of white blood cells, Which plays vital role in fighting with various infections.

Normally all the citrus fruits are rich in vitamin C, And there is a variety of citrus fruits you can choose from such as

The recommended daily dosage is 75 mg for women and 90 mg for men.

2) Red bell pepper

Red bell pepper is a rich source of vitamin C

Most of us think that citrus fruits have the most vitamin C than any other fruits and vegetables.

But you will be amazed to know that red bell peppers (127.7 mg) contain 3 times more vitamin C than orange.(45 mg)

Apart from boosting immune system, vitamin C may help to keep your eyes and skin healthy.

3) Broccoli

Broccoli for immune system

Broccoli is one of the healthiest vegetable you can include in your diet everyday.

Because it is full of vitamins and minerals, It contains vitamin A, C, and E along with healthy fibers and antioxidants.

Also the correct way to cook broccoli is to cook it as little as possible. You should prefer STEAMING, So that most of it’s nutrients should stay intact.

4) Garlic

Garlic helps to boost immune system because it contains allicin

You can find garlic in almost all the different foods around the world.

It helps to boost immune system because it contains allicin, Which has heavy concentration of sulphur.

5) Ginger

Ginger Help to reduce inflammatory illnesses

Beside of boosting immune system, Ginger may also help to reduce inflammatory illnesses, sore throat, nausea.

It may also help to lower chronic pain and cholesterol.

6) Spinach

Similar to broccoli, Spinach is also healthiest when it’s cooked as little as possible so that it retains it’s nutrients.

It is also packed with vitamin C along with antioxidants and beta carotene.

Which is helpful to increase infection fighting ability of our immune system.

7) Almonds

Almonds contains powerful antioxidants and Vitamin E

Almonds contain powerful antioxidants and Vitamin E which are very effective for healthy immune system.

Daily recommended dose of Vitamin E is only 15 mg for adults, hence you have to eat only 46 whole almonds to complete your daily dosage.

8) Green Tea

Drinking green tea helps to speed up metabolism

Green tea is amongst the favorite drinks while doing intermittent fasting.

It has many powerful antioxidants like flavonoids and epigallocatechin gallate.(EGCG)

A study done in 2014, EGCG has been shown to enhance your immune system.

It also contain amino acid L- theanine, Which may trigger production of germ fighting compounds in your T cells.

Note:- You should focus on increasing your immunity, Especially during this CORONA virus pandemic. For that you should Exercise daily and eat nutritious foods, Also keep yourself stress free and take good amount of quality sleep.

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So, I hope that now you have learned about immune system function and how to boost it.

If you have any queries or feedback then please feel free to comment.  

Note:- For your Kind Information, “I may get small commission if you buy anything through links in this post.”

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