The rise in cancer can be blamed on Kenya's uncontrolled quality assurance sector, the Kenya Accreditation Service has said.

Kenas chairperson Miriam Mutugi said the food, water and air consumed by Kenyans do not undergo thorough testing and certification as per the required standards.

"An ongoing research that on cancer prevalence has blamed the rise of the disease in Kenya to the food and water we consume," said Mutugi.

She was speaking at the weekend in Mombasa during the accreditation of the Polucon Services Kenya Ltd, an independent cargo testing and quality assurance of exports, imports and local products.

She said rogue quality testing laboratories are to blame for the dangerous products which find their way into the country.

"All companies involved in the quality testing should ensure that all grains and substances believed to be likely carriers of aflatoxin are thoroughly tested before release to the market," said Erastus Kimuri, Kenas' chemical engineer.