Probiotics Explained: Gut Health, Immunity & Oral Health Connection
From ‘Pro’ and ‘Biota’ meaning ‘For’ and ‘Life’.
At OHH, we talk a lot about whole health—and probiotics are a big part of that conversation.
The word probiotic literally means “for life”—and when you understand what they do, it makes perfect sense.
What are probiotics?
Probiotics are live microorganisms (good bacteria and beneficial yeasts) that naturally live in your body.
They help to:
Restore balance in your gut
Support digestion
Maintain a healthy immune system
Keep harmful bacteria under control
Your Microbiome: The Bigger Picture
Probiotics are just one part of something much bigger—your microbiome.
Your microbiome is a vast community of trillions of microorganisms living in and on your body, including:
Bacteria
Fungi (including yeasts)
Viruses
Protozoa
Incredible fact:
👉 No two people have the same microbiome—not even identical twins.
Where Do Probiotics Live in the Body?
While most people think of the gut, beneficial bacteria exist throughout the body, including:
Gut (especially the large intestine)
Mouth (the start of the digestive system)
Skin
Lungs
Urinary tract
Vagina
This is why probiotics are increasingly linked to whole-body health—not just digestion.
How Do Probiotics Work?
Probiotics help your body stay in balance by:
Supporting digestion
Producing certain vitamins
Strengthening the gut lining
Preventing harmful bacteria from overgrowing
Supporting immune function
This balancing act is happening constantly in a healthy body.
Do You Need Probiotics?
Not always.
If you:
Eat a balanced, fibre-rich diet
Include a variety of whole foods
Maintain a healthy lifestyle
…your body can often maintain this balance naturally.
However, modern life isn’t always ideal.
Busy schedules, stress, processed foods, and illness can all disrupt gut balance—which is where probiotics may help.
Potential Benefits of Probiotics
Research suggests probiotics may support:
Digestive health (including IBS symptoms)
Diarrhoea (including after antibiotics)
Immune system function
Vaginal and urinary health
Skin conditions like eczema
Gum health and oral microbiome balance
👉 Important: effects vary depending on the strain and the individual.
Probiotics & Oral Health (The OHH Connection)
This is where it gets really interesting for us at OHH.
The mouth is the start of the gut—and it has its own microbiome.
An imbalance in oral bacteria is linked to:
Gum disease
Inflammation
Bad breath
Supporting your microbiome—both inside and out—can play a role in maintaining oral health.
Best Natural Sources of Probiotics
You can introduce probiotics through everyday foods.
Breakfast
Yoghurt with live cultures
Kefir
Sourdough bread
Lunch
Cottage cheese
Kombucha
Tempeh
Snacks
Fermented pickles
Dinner
Sauerkraut
Kimchi
Miso soup
👉 Always check labels for “live and active cultures.”
What About Probiotic Supplements?
Supplements can be helpful, especially when:
Diet is inconsistent
After illness
During or after antibiotics
Some supplements also include prebiotics—these are fibres that feed good bacteria.
👉 When combined, this is called a synbiotic.
Caution With Probiotic Supplements
While generally safe, probiotics can:
Cause mild bloating or digestive changes initially
Not be suitable for everyone
Extra caution is needed if you:
Have a weakened immune system
Are undergoing medical treatment (e.g. chemotherapy)
Have recently had surgery
👉 Always seek professional advice if unsure.
Probiotics After Antibiotics
Antibiotics are essential—but they don’t just kill harmful bacteria.
They can also reduce beneficial bacteria in your gut.
This may lead to:
Digestive upset
Imbalance in gut flora
Probiotics may help to:
Restore balance
Support recovery
There is growing discussion in healthcare about combining probiotics with antibiotic treatment—but guidance varies.
The OHH Approach
At OHH, we take a proactive, preventative approach to health.
That means:
Supporting your microbiome
Encouraging balanced nutrition
Linking oral health with whole-body wellbeing
For many of our patients, a daily probiotic is a simple way to support consistency—especially with busy lifestyles.
Stay Fabulous: Small Habits, Big Impact
Your microbiome plays a role in:
How you feel
How you digest food
Your immune response
Even your oral health
Small, consistent habits can make a big difference.
Ready to Support Your Oral & Whole Health?
At OHH, we don’t just clean teeth—we support long-term health and confidence.
👉 Book your Ohh! Flow Hygiene appointment today and take a proactive step towards better wellbeing.