Digestive Health

Acid Reflux: Definition, Occurrence, Cause, Sym...

Dr Muhammad Zeeshan Afzal

Acid Reflux Overview Acid reflux is the backflow of stomach contents into the oesophagus, causing symptoms like heartburn, troubled swallowing and regurgitation. If the symptoms occur more than twice weekly,...

Acid Reflux: Definition, Occurrence, Cause, Sym...

Dr Muhammad Zeeshan Afzal

Acid Reflux Overview Acid reflux is the backflow of stomach contents into the oesophagus, causing symptoms like heartburn, troubled swallowing and regurgitation. If the symptoms occur more than twice weekly,...

What are bowel polyps?

Dr Adam Williams

What’s covered? Colon polyps often referred to as bowel polyps, are small abnormal tissue lesions that can appear on the rectum or colon (large bowel) wall. Although they have the...

What are bowel polyps?

Dr Adam Williams

What’s covered? Colon polyps often referred to as bowel polyps, are small abnormal tissue lesions that can appear on the rectum or colon (large bowel) wall. Although they have the...

How to Increase Microbiome Diversity

Dr Muhammad Zeeshan Afzal

Medically reviewed and written by Dr Zeeshan Afzal (MBBS), Medical Officer at Welzo. Last updated: July 2026. This article is for general information and does not replace individual medical advice....

How to Increase Microbiome Diversity

Dr Muhammad Zeeshan Afzal

Medically reviewed and written by Dr Zeeshan Afzal (MBBS), Medical Officer at Welzo. Last updated: July 2026. This article is for general information and does not replace individual medical advice....

The 8-Week Gut Reset Protocol

Dr Muhammad Zeeshan Afzal

Written by Dr Zeeshan Afzal, MBBS — Medical Content Lead, Welzo. Last reviewed and updated: July 2026. Reading time: approximately 14 minutes. A gut reset protocol is a structured, time-limited...

The 8-Week Gut Reset Protocol

Dr Muhammad Zeeshan Afzal

Written by Dr Zeeshan Afzal, MBBS — Medical Content Lead, Welzo. Last reviewed and updated: July 2026. Reading time: approximately 14 minutes. A gut reset protocol is a structured, time-limited...

Do Probiotics Survive Stomach Acid?

Dr Muhammad Zeeshan Afzal

Written and medically reviewed by Dr Zeeshan Afzal, Medical Officer at Welzo.Last reviewed: July 2026 | Next review due: July 2027 | Evidence-based, UK-focused It is the single most common...

Do Probiotics Survive Stomach Acid?

Dr Muhammad Zeeshan Afzal

Written and medically reviewed by Dr Zeeshan Afzal, Medical Officer at Welzo.Last reviewed: July 2026 | Next review due: July 2027 | Evidence-based, UK-focused It is the single most common...

CFU vs AFU: How to Read a Probiotic Label

Dr Muhammad Zeeshan Afzal

Medically reviewed and written by Dr Zeeshan Afzal, MBBS — Medical Officer and Health Content Lead at Welzo. Last updated: July 2026. If you have compared two probiotic bottles in...

CFU vs AFU: How to Read a Probiotic Label

Dr Muhammad Zeeshan Afzal

Medically reviewed and written by Dr Zeeshan Afzal, MBBS — Medical Officer and Health Content Lead at Welzo. Last updated: July 2026. If you have compared two probiotic bottles in...