Psoriasis
is an inflammatory disease of the epidermis based on
an immunological mechanism involving Langerhans cells and T lymphocytes
that produce pro-inflammatory cytokines. Genetic factors, environmental
factors, and improper nutrition are considered triggers of the disease.
Numerous studies have reported that in a high number of patients,
psoriasis is associated with obesity. Excess adipose tissue, typical
of obesity, causes a systemic inflammatory status coming from the
inflammatory active adipose tissue; therefore, weight reduction is
a strategy to fight this pro-inflammatory state. This study aimed
to evaluate how a nutritional regimen based on a ketogenic diet influenced
the clinical parameters, metabolic profile, and inflammatory state
of psoriasis patients. To this end, 30 psoriasis patients were subjected
to a ketogenic nutritional regimen and monitored for 4 weeks by evaluating
the clinical data, biochemical and clinical parameters, NMR metabolomic
profile, and IL-2, IL-1β, TNF-α, IFN-γ, and IL-4
concentrations before and after the nutritional regimen. Our data
show that a low-calorie ketogenic diet can be considered a successful
strategy and therapeutic option to gain an improvement in psoriasis-related
dysmetabolism, with significant correction of the full metabolic and
inflammatory status.