Experts agree that plant-derived oils belong in balanced eating patterns just like other vegetable fats. Canola, flax, grape seed, sunflower, sesame, olive and avocado versions show solid fat balances, with minimal saturated types and plenty of unsaturated ones that aid heart function while cutting LDL, unlike animal fats such as butter or lard that deserve strict limits. Olive oil handles cooking fine when temperatures stay moderate, which surprises many people, and remains steady below roughly 180-210 degrees. Rapeseed and avocado versions behave the same way. Broad overviews that combine every study on the topic back the health gains from these oils, and those overviews carry the strongest weight because they examine the full body of work instead of single experiments. Someone mentioned feeling unwell after using such oils from a street meal. The issue stems from the unbalanced processed food made under questionable conditions, not the oils themselves. The discomfort traces to the real source.