Seed oils, such as canola and soy, are often villainized online, but scientific evidence does not support these claims. Experts like Guy Crosby, an adjunct associate at Harvard’s T.H. Chan School of Public Health, argue that seed oils themselves are not the primary cause of health problems.
While many foods containing seed oils are unhealthy due to high levels of refined carbohydrates, sodium, and sugar, cutting back on these components can lead to weight gain and other negative outcomes. Repeatedly heating unsaturated fats, however, is a legitimate health concern, particularly in restaurants where oil is rarely changed.
In contrast, consuming whole foods rich in omega-6 fatty acids – such as nuts and seeds – has been shown to have beneficial effects on cholesterol, blood sugar, and heart disease risk. These findings suggest that seed oils are not the enemy.
Source: https://hsph.harvard.edu/news/scientists-debunk-seed-oil-health-risks