Source： https://www.medicalnewstoday.com/articles/327186.php

Results of a new study in mice suggest that the body may be able to defeat the influenza virus if a person has the right sort of diet — a ketogenic, or keto, diet.

Infection with the influenza virus, better known as the flu, has accounted for 12,000–61,000Trusted Source deaths every year since 2010 in the United States, with an annual economic burden of $87.1 billionTrusted Source. 

The introduction of the flu vaccine has greatly improved infection and morbidity rates. However, there is still currently no cure for the illness.

Healthcare professionals and scientists alike are continuing the search for novel therapeutics to combat the flu, yet the key may lie within the body's own immune system. Moreover, it may be activated by the keto diet.

Following the keto diet involves eating foods that are high in fat and low in carbohydrates. Meals tend to consist of a variety of meat, fish, poultry, and non-starchy vegetables.

According to the findings of a new study, appearing in the journal Science Immunology, when mice fed a keto diet were injected with the flu virus, their survival rates were much higher than those of mice fed a diet high in carbohydrates.

The main reason for this, the researchers believe, is that a keto diet blocks the formation of inflammasomes, which are multiunit protein complexes that the immune system activates.

Inflammasomes can also cause harmful immune system responses in the host. This triggers the release of gamma delta T cells.

Gamma delta T cells are responsible for producing mucus in the linings of the lungs, which helps the body get rid of infectious agents. The mucus is then wafted up the airways and coughed out. 

The joint senior authors of the study are Prof. Akiko Iwasaki and Prof. Vishwa Deep Dixit, both of the department of immunobiology at the Yale School of Medicine, in New Haven, CT.