
When oesophageal cancer study was conducted by the National Cancer Institute in Tenwek Hospital in 2013, the results that came out later shocked many residents in the entire Rift Valley region.
The research study which sought to determine the causes of rising oesophageal cancer among the residents of Bomet showed that hot beverage and the use of Mursik (traditionally fermented milk) could be associated with esophageal cancer.

The research found that when Mursik is ingested several times daily, the repeated exposure to carcinogenic levels of ethanol may contribute to the initiation of cancer formation of the esophagus.
Contrary to the earlier research findings, cancer experts in the country have, however, dispelled fears linking mursik to throat cancer and are now advising Mursik lovers to enjoy as much fermented milk as they can.

According to the National Cancer Registry at the Kenya, which is part of Kenya Medical Research Institute (Kemri), there was no conclusive research conducted so far in the country to determine the said claims.
Cancer experts have ruled fears linking 'mursik' (traditionally fermented milk) to throat cancer, adding that no conclusive research has been conducted to validate the claims ~ National Cancer Registry at the Kenya, which is part of Kenya Medical Research Institute (@KEMRI_Kenya) pic.twitter.com/dKb31CL7nN
— Radio KhendoFM, 107.9 (@RadioKhendoFM) August 1, 2019
The study which was conducted at the Kenyatta National Hospital found that fermented milk, including the traditional ‘mursik’, does not cause either cancer of the throat or large intestines.
Even as the two reports continue to cause ambiguities among Kenyans, Mursik lovers, especially from the Rift Valley region have promised to stay put and continue ingesting their favorite drink terming it a traditional drink which has been used over and over since time immemorial with no cancer-causing records.
Link between ‘mursik’ and cancer https://t.co/DRlNawOcTc
— Daily Nation (@dailynation) August 2, 2019
Here are some reactions from Twitter and Facebook users;
Solomon Miranga Chege I think in 1980 s there were no or very low cases of cancer and our great grandfathers lived on it ( sour milk ) .Let’s be real and Let’s not poison everything
Habaswein Al-habasweyne What kind of conspiracy theory is this? Nonsense!! In fact Mursik aka yoghurt is known to boost the immune system …and considered healthiest food. Other factors may be responsible for the high cancer prevalence…do the research!!
I'm perplexed that Mursik is the leading cause of throat cancer. Honestly, but Mursik has been in existence since the era of their forefathers. More research to be done rather opinionated assumptions.
— Innocent Ngare (@ngareinnocent) July 14, 2019
Macleod Oliver so because laboso has died when she comes from rift so mursik is the cause nonsense
Macleod Oliver so because laboso has died when she comes from rift so mursik is the cause nonsense
Geofrey Korir Daily nation acheni kuingilia maziwa na mtafute dawa ya cancer ,nimemaliza cup moja tu xai,
I'm perplexed that Mursik is the leading cause of throat cancer. Honestly, but Mursik has been in existence since the era of their forefathers. More research to be done rather opinionated assumptions.
— Innocent Ngare (@ngareinnocent) July 14, 2019
William Makonge Just afew month ago,this same research team said sugar has macury, then themselves are taking tea to date,some few weeks ago they said meat has chemical substance’s, currently they are eating roasted and fried meat to date,now they have reached out to murzik(milk) ,this is an insult, milk has been there for generations, and it has been termed as a complete meal for young and adults, ..what i know is that after they researched the same day they used masiwa lala(murszik)its good for health..
They say
Mursik causes throat cancer
Hot tea causes throat cancer
Then milk feeds cancerous cells
All this is crap all these I will take alafu come do research on me coz I won't have cancer in me.— Ronald Mutai (@RonnieMutai) April 7, 2019
This is the hill I am ready to die on. We have, and will continue to drink, drank Mursik for millenia and suddenly causes throat cancer? Do better research https://t.co/EQJt3lHQ1t
— James *Ghost* St Patrick (@MfalmeNaMajitu) July 15, 2019