WHO recommends favouring unsaturated fats over saturated and trans fats. Olive oil is among the sources of unsaturated fat; butter and lard supply saturated fat. The relevant change is substitution within the diet, rather than adding oil without considering what you already eat. [OMS — grassi e alimentazione sana]
The NHS explains that replacing saturated fats with unsaturated fats can help lower blood cholesterol. Olive oil contains monounsaturated fats but is still energy-dense. An individual cholesterol response cannot be predicted from a serving. [NHS — conoscere i grassi alimentari]
In the kitchen, try an EVOO and herb dressing for vegetables, adapting it to your taste. If you have high cholesterol or cardiovascular disease, discuss your diet with your healthcare professional: olive oil does not replace medicines, check-ups or treatment.