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Common Mistakes That Damage Our Immune System

Updated on 26 July 2022

Have you experienced eyelids suddenly closing and eyes tearing up when an external object – such as dust or when an eyelash goes into your eye? That is your body’s immune system that is at work – your defence forces trying to eject the invader from the system.

The immune system is our own body’s defence mechanism, that fights our body’s invaders. It is a complex network of cells and proteins that defend the body against infection. Many external forces are acting on our body like toxic chemicals in the air and harmful bacteria which could be present around us. These things are taken care of if you have a robust immune system.

White Blood Cells are the ones that help our immune cells function and keep them in a well-oiled state. Lymphocytes and phagocytes – are the 2 types of White Blood Cells that perform important functions. 

Types of Immune System

There are 2 kinds of immune systems that work to protect the body:

  1. Innate immune system – that we are born with
  2. Adaptive or acquired Immune system – our body grows these when exposed to microbes or chemicals

Innate Immune System - Talking about the immune system, our body is designed to defend itself through our very own body organs, like our skin which has a waterproof barrier that secretes oil. This oil has the potential to kill harmful microbes.  If we talk about our lungs, mucous in the lungs traps foreign particles, and small hairs wave the mucous upwards to cough it out.  Our digestive tract also has a mucous lining containing antibodies and the acid in the stomach can kill any harmful microbes. Other defences contain antibacterial enzymes which help reduce the risk of infection.  Fever is also an immune system response.  When the body temperature rises, the temperature rise kills some of the microbes, it triggers the body’s repair process.

Acquired or Adaptive Immune System – You would have heard the term antibodies, especially in the context of Covid -19.  It develops when a person gets infected or gets vaccinated. For instance, once a person gets Chickenpox, he/she won’t get it again as the body has developed antibodies and if at all it tries to revisit the same person, the antibodies kill it.  

A strong immune system helps one to carry on day-to-day activities normally without any bodily constraints. White blood cells have a critical role to play in our immune system.

It is in our own hands how we build a strong immune system by following a certain way of life. Simple things like having a reasonable amount of sleep, having a balanced diet, some simple exercises, or going for a daily walk.

How One Damages The Immune System

There are different ways by which one could damage one’s immune system – some of which are listed below:

Broadly speaking, 

  • Caring for self: (Stress and anxiety) mental and emotional can create problems for the immune systems. In these situations, one can move away from the scene and calm down. Another possible way is to do meditation which enables us to handle day-to-day stress more calmly. 
  • Inappropriate food: Sugary food, colas, and processed foods can attack our immune system. Don’t forget that excessive salt can also cause problems with our immune system.    
  • Inadequate sleep:  Lack of sleep can leave an impact. During our sleep, our body releases, cytokines and proteins that aid our immune system in building resistance. Lack of sleep means that we would have an inadequate amount of cytokines. 
  • Alcohol Consumption: Alcohol Can impact our immune system as it attacks our gut microbiome. These microbiomes reside in our guts and aid our immune system. Alcohol disrupts the functioning of these microbiomes and disturbs the balance between healthy and unhealthy bacteria in favour of the latter. Result: Reduced power of the immune system. 
  • Erratic Lifestyle: Our erratic lifestyle coupled with sedentariness and staying awake for longer periods compromises our sleep duration, which normally should be 6 to 8 hours for a person to be reasonably rested.  

As can be seen, the immune system in our bodies is a natural defence system to take care of our bodies. It is in our hands to nurture the immune system to the extent possible. As to the aspects that can impact it negatively, we need to do things in moderation so that the negative impact is controlled and is less on our immune system. If you want assistance in navigating a healthy life, contact the best internal medicine doctor nearest you from the best dietician in Hyderabad.

Ms. G Sushma
Registered Clinical Dietician
CARE Hospitals, Banjara Hills, Hyderabad






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