#ProTip: If you could do just one thing for your health, remove seed (vegetable) oils like soy/canola from your diet. They are pure poison!

Seed oils are high in omega-6 polyunsaturated fats, particularly one called linoleic acid...

h/t @Mangan150 which leads to the formation of HNE (4-hydroxynonenal), a destructive compound that reacts with proteins and lipids in cell membranes. Think of it as a molecular bullet, flying around at random in cellular space, until it makes contact with a target molecule, which it damages.