Certain approaches, not sufficiently supervised medically, can disrupt the microbiota and negatively impact health.
Colds, headaches, chills, fatigue… As viruses return in force in October, immunity is put to the test. And certain food choices can weaken the immune system. One nutritional protocol in particular is attracting the attention of doctors. “This excludes almost all fruits, the majority of vegetables and sources of fiber – all essential elements for the balance of the intestinal microbiota, which plays a central role in the proper functioning of the immune system”recalls Dr Jean-Michel Lecerf, doctor specializing in endocrinology and metabolic diseases.
In the short term, it may have health benefits. It would contribute to the regulation of blood sugar, the reduction of joint pain and the symptoms of certain types of epilepsy. “Its protocol is very particular, characterized by an extremely low carbohydrate intake – generally less than 5% of total caloric intake. It has been used for over a century to treat cases of drug-resistant epilepsy. In this specific medical context, ketone bodies produced by fat metabolism can modify the electrical activity of the brain, with a recognized antiepileptic effect. explains our interlocutor. Some studies also suggest positive effects in certain cardiac or renal pathologies. But in the long term, “attention”warns the doctor.
‘Because of its possible effects on the immune system, it should only be considered temporarily and with professional supervision.’ believes Dr Lecerf. Research shows that it can lower protective antibodies (IgA) and modify certain immune cells. By almost completely removing carbohydrates, it forces the brain to use ketone bodies as an alternative fuel, even though it constantly needs glucose to function properly. This is where it gets its name “ketogenic” diet.
Followed over the long term, this type of restrictive diet can induce deficiencies and have repercussions on the immune response. During the autumn period, a regular intake of vitamins, minerals, fibers and polyphenols from fruits and vegetables helps to optimize the body’s defense mechanisms. Better therefore wants to ignore this diet.
