Reusing leftover cooking oil is a common kitchen habit, but medical experts warn it could be a fatal mistake. When oil is heated to high temperatures multiple times, its chemical structure breaks down, releasing Polycyclic Aromatic Hydrocarbons (PAH) and free radicals. These compounds are highly carcinogenic and can directly stimulate the growth of cancer cells in the human body.

Cardiovascular and Brain Risks Reheated oil experiences a massive surge in trans fats, which significantly raises bad cholesterol levels. This leads to arterial blockages and a heightened risk of sudden heart attacks. Furthermore, recent studies suggest that toxic elements in burnt oil can damage brain cells, potentially leading to degenerative conditions like Alzheimer’s and Parkinson’s disease.

Digestive and Liver Complications Consuming food cooked in reused oil often results in severe acidity, heartburn, and gastric ulcers. Over time, these toxins can severely impair liver function. Health professionals recommend using only the required amount of oil for frying and avoiding the reuse of leftover oil at high temperatures to maintain long-term wellness.

At a Glance

• Reheating oil produces harmful free radicals that significantly increase cancer risks.
• High trans fat content leads to arterial clogging and cardiovascular diseases.
• Continuous use can result in permanent liver damage and neurological issues.
• Experts advise against deep-frying in leftover oil to ensure basic health safety.