Seed oils are harmful to health due to their high omega-6 fatty acid content, which promotes inflammation and disrupts the balance of essential fatty acids, contributing to oxidative stress and increasing the risk of heart disease. These oils are often highly processed, containing trans fats that negatively impact cholesterol levels and blood sugar regulation. Excessive consumption of seed oils is linked to insulin resistance, obesity, and chronic conditions such as diabetes and metabolic syndrome. They can interfere with proper cell function, leading to cellular damage and contributing to the development of inflammatory diseases, cancer, and cardiovascular problems.