Fried Potatoes and Rosemary Show Temporary Memory Boosts in Recent Studies

Researchers at the University of California, Irvine found that eating high‑fat, high‑carbohydrate foods such as fried potatoes raises blood triglyceride levels, which reach the hippocampus and briefly enhance short‑term memory formation in laboratory mice. The effect is short‑lived and does not outweigh the known health risks of ultra‑processed foods, including obesity, type‑2 diabetes and cardiovascular disease.

Separate research highlighted rosemary (Rosmarinus officinalis) as a cognitive aid. Its antioxidant compounds, especially cineole, protect nerve cells, support acetylcholine production and improve cerebral blood flow. Clinical trials reported that inhaling rosemary oil or taking extracts can modestly improve memory, attention, mood and sleep, with notable benefits observed in people with dementia.

Both studies suggest that certain common foods and herbs can temporarily influence brain function, but they do not recommend regular consumption of fried foods, and long‑term health impacts remain a concern.