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Why you keep getting sick and what you can do about it

Why you keep getting sick and what you can do about it_banner.webp
18 June 2021|3 min read

“Oh no, not again. Please tell me: why do I keep getting sick?! I can’t handle another cold. Going to work sick was never mentioned in ‘How to Win Friends and Influence People’. 

And I’ll have to restart the couch-to-5k training program from scratch…”

If any of that sounds familiar to you, it could be that your immune system is struggling.  

We asked Dr Jill Gamberg, GP, to explain why you and your family may be frequently getting sick. Dr Jill also advised what you can do to help make your immune system stronger. 

Reasons why you might have a weak immune system 

Dr Jill says there are several lifestyle and physical factors that can lower your immune system function.

You’re not getting enough quality sleep

Sleep is so important for immune system health. “If we don’t get enough of it or it is low quality sleep, our immune systems go down, and we're more likely to get sick,” says Dr Jill. 

Your food choices could be healthier

If you’re farting a lot, have nausea or bloating, it could be a sign that your immune system is low. You might need to incorporate healthier foods into your diet

Your stress levels have been through the roof

“If we have really high levels of stress, we're much more likely to not be able to fight off an illness. If you are a bit run down, that’s when you get sick,” says Dr Jill. 

You might need to be more active

Research suggests that moderate physical activity can stimulate your immune system. Dr Jill notes that, “You should aim for 150 minutes of moderate intensity physical activity per week, broken up into manageable chunks to fit into your lifestyle. Even better if you can exercise outside to get a bit of vitamin D too.”

Other reasons why you might keep getting sick

Besides your immune system health, Dr Jill says that other factors might influence why you keep getting sick. 


Dr Jill says it’s normal for kids to be sick more often than adults, the average preschooler having six or more colds a year.

You have a young child

“As a GP, I constantly have parents coming to the clinic asking why they keep getting sick. My answer? Kids,” Dr Jill says, “Especially little kids. They go to daycare, pick up a cold and then share it with their family.”

Dr Jill says it’s normal for kids to be sick more often than adults. With the average preschooler having six or more colds a year, it’s no wonder that many parents feel like they’re always sick with a cold. 

“Sadly, you can literally get a new virus every couple of weeks. Don’t be fooled by thinking that if you’ve had a cold, then you can’t catch another cold, or a flu or a different virus altogether. ”

You have allergies 

Dr Jill says that allergies can often be mistaken for colds. “I think sometimes people have chronic hay fever, and they can't tell the difference between a cold and a hay fever.” Speak to your doctor if your symptoms are ongoing or not improving though. 

You touch your face too much 

Dr Jill says that many people touch their face hundreds of times per day without thinking about it. “If people didn’t touch their faces, they wouldn’t get sick as often.” 

It’s also important to think about others so you don’t spread your germs - wash your hands frequently, cough/sneeze into your elbow, stay home if you’re sick and wear a mask if you must leave the house. 


Dr Jill says there are several lifestyle and physical factors that can lower your immune system function.

How to have a more healthy immune system

Dr Jill says that there is no magic pill to help a weak immune system. Instead, she recommends:

  • getting better quality sleep more consistently
  • learning and applying stress reduction techniques
  • doing more regular physical activity
  • improving your diet. Speak to a qualified dietitian to get nutritional advice specific to your needs. Your appointment might even be covered by your health insurance provider
  • try to touch your face less during the day
  • practice good cough/sneeze etiquette 
  • stay at home if you are sick 

Help is available when you’re sick of being sick

There are many reasons why you keep getting sick. Your immune system health can be impacted by several things, from not getting enough sleep to what you’re eating. That’s why it’s important to see your GP when you are sick of being sick. 

Even mild cold and flu symptoms can be a sign of something more serious in our current climate. So if you start feeling a sniffle, or a tickle in the back of your throat, don’t wait for your annual health check-up. Book an appointment sooner rather than later so that your GP can rule out any concerns.


Dr Jill Gamberg is a General Practitioner and one of the first Australian Lifestyle Medicine Physicians whose goal is to help prevent disease and maintain wellness with evidence-based practice, and to passionately improve health literacy.

Reviewed by the healthylife Advisory Board June 2021


This article is for informational purposes only and does not provide medical advice, diagnosis, or treatment. Any information published on this website or by this brand is not intended as a substitute for medical advice. If you have any concerns or questions about your health you should consult with a health professional.