The short answer: we feel and look better when we avoid them. Don't believe us? Just give them up and see for yourself.
As for the long answer, well—seed oils are an inherently processed food. They did not exist more than 150 years ago, before the invention of the industrial equipment and chemicals needed to process them.
What does that mean for your health?
Two things: they don't fill you up, and they cause inflammation everywhere.
Studies have shown that people will eat hundreds more calories per meal before they feel full when the fat comes from seed oils, as opposed to a saturated fat like tallow or butter. This excess calorie intake makes it incredibly hard to lose weight on a diet full of seed oils.
Adding insult to injury, seed oils are also highly inflammatory.
Why? Because they contain a high concentration of poly-unsaturated fats (PUFAs), which are chemically unstable and oxidize very easily.
Oxidation is a chemical reaction that produces free radicals, which are inflammatory molecules that tear apart your cells.
Leading nutritionists have identified chronic inflammation as a main driver of all the terrible diseases no one wants (diabetes, cancer, Alzheimers, PCOS, IBS, and more). While those diseases develop over many years, in the short term seed oils can also cause bloating, bad skin, cellulite, fatigue, estrogen dominance, and blood sugar spikes.
Simply put, they are stressful on every part of your body, and chronic stress kills.