Yakuts have a high predisposition to lactose intolerance.

Experts from the National Center for Genetic Research have identified the highest predisposition to lactose intolerance in Russia among residents of Yakutia. There is also a high probability that residents of Dagestan, Kabardino-Balkaria and North Ossetia will not digest milk and products derived from it.

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Diseases may not manifest themselves for years and destroy the body at the same time.

Scientists have concluded that the predisposition to this condition is influenced by nationality.

"Residents of the Vladimir, Arkhangelsk, Ryazan, Vologda and Kirov regions have good milk tolerance. For example, the national composition of Yakutia is characterized by a relatively small number of Russians (32.6%) and a predominance of the Yakut nationality (55.3%). In Dagestan, Kabardino-Balkaria and North Ossetia, the Russian population also accounts for a very small proportion: 19.8% in Kabardino—Balkaria, 3.2% in Dagestan and 18.9% in North Ossetia," the scientific work notes.

The risk of lactose intolerance can also be increased by age, intestinal diseases, previous infections, such as rotavirus, chemotherapy and radiotherapy, the presence of inflammatory diseases or celiac disease (gluten intolerance) and dysbiosis, Irina Kolesnikova noted.

"The key preventive measure for the condition is exclusion from the diet or restriction of the consumption of dairy products," said gastroenterologist Andrey Yakushev.

He also added that doctors prescribe enzyme preparations or prebiotics and probiotics for people with this syndrome.

Read more in the exclusive Izvestia article:

Learn from scratch: lactose intolerance is most often a threat to residents of Yakutia