Psoriasis is an inflammatory disease that affects the skin and can also reflect wider changes in the immune system and metabolism. Although current treatments can improve skin symptoms, they do not always address the underlying biological pathways that drive inflammation.
In this study, we asked whether time-restricted eating, a dietary approach in which food is consumed within a shorter daily window, could help reduce inflammation in people with psoriasis. Participants with psoriasis and healthy volunteers completed a three-day time-restricted eating intervention. Blood samples were collected before and after the intervention to study changes in immune cells.
We focused especially on CD4+ T cells, a type of immune cell that helps coordinate inflammation and is important in psoriasis. After time-restricted eating, CD4+ T cells from people with psoriasis produced lower levels of inflammatory signals. We also found changes in genes, fats, and small molecules involved in immune activation, suggesting that the intervention may shift these cells toward a less inflammatory state.
Together, these findings suggest that even a short period of time-restricted eating may influence immune and metabolic pathways in psoriasis. Future work will test these findings in larger studies and examine whether these biological changes translate into meaningful clinical benefits for patients.