Does cooking with vegetable oils increase the risk of chronic diseases?

Agreed. It's bizarre, but I also know a large proportion of the population get their nutritional information nowadays from tenuously referenced YouTube/Facebook/TikTok videos by unqualified authors, so perhaps not surprising. They are in my eyes no different than the Atkins and Peter D'Adamo's of the 90's. The exact conclusions of this study were:

From the results of the studies included in this review, we conclude that (1) the myth that frying foods is generally associated with a higher risk of CVD is not supported by the available evidence; (2) extra-virgin olive oil significantly reduces the risk of CVD clinical events and weight gain, based on the results of a large randomised trial that included as part of the intervention the recommendation to use large amounts of extravirgin olive oil for culinary purposes, also for frying foods; however, the whole Mediterranean dietary pattern plays a more significant role rather than the supplemental extra-virgin olive oil alone; and (3) high consumption of fried foods is probably related to a higher risk of weight gain and hypertension. However, many factors such as the type of oil used and the frying technique (deep-frying or panfrying), frying duration and temperature, and use of new or reused oils for frying have to be taken into account.

unfortunately the authors decided to use nonstandard definitions which really muddies the waters. E.g. they say

> This dietary pattern is rich in fat from vegetable oils (especially virgin olive oil)

Yet it is widely understood that olive oil is a 'fruit oil' and not a 'vegetable oil' (/seed oil).

Linguistic games and inhomogenous definitions is a significant problem.

Are you referring to the push to replace partially hydrogenated vegetable oils (which would likely mean they’d end up using non-hydrogenated vegetable oils), or do you mean something else?

Does this study actually say anything to that effect? It seems to imply that olive oil is beneficial or at least not harmful.

I've heard that animal fats are better than that now-banned partially hydrogenated crap, and a lot of people lost a lot of trust in modern nutrition science because of it, which I suspect is a lot of how the idea that animal fats are healthy got popular, but that doesn't prove they are better than regular vegetable oils.

> it's also the healthier option.

I doubt that this is true for the source of the fat