Cold Pressed Oils vs Refined Oil: What Happens Inside Your Body?

You Cook Every Day — But Is Your Oil Working Against You?

Every meal you cook starts with oil. It goes into the pan first, coats every ingredient, and is absorbed into everything your family eats. That one bottle of oil you buy each month affects your cholesterol levels, your digestion, the vitamins your body absorbs — and over years, potentially your heart.

So when you pick up that familiar yellow bottle of refined sunflower or soybean oil, it's worth asking: what exactly is this oil, and what is it doing inside my body?

Here's the comparison your cooking oil brand doesn't want you to see.

Cold Pressed Oil: How It's Made

Cold pressed oil — also called chekku oil, kachi ghani oil, or wood pressed oil in South India — is extracted by physically pressing seeds or nuts in a wooden or stone mill at low temperatures (below 40–50°C). No chemicals. No industrial heat. Just mechanical pressure and time.

The result: an oil that still contains its original vitamins, antioxidants, essential fatty acids, and the natural flavour of the source ingredient. Cold pressed sesame oil smells like sesame. Cold pressed coconut oil smells like coconut. They taste like what they are — because nothing has been stripped from them.

Refined Oil: What Happens in the Factory

Refined oil extraction is a six-step industrial process designed to maximise yield and extend shelf life — not to preserve nutrition:

1. Solvent extraction — seeds are soaked in hexane (an industrial chemical) to extract maximum oil
2. Degumming — phospholipids and natural gums are removed with hot water or acids
3. Neutralisation — free fatty acids are removed using caustic soda (sodium hydroxide)
4. Bleaching — natural pigments and colour are removed using activated clay
5. Deodorisation — the oil is heated to 200–250°C under vacuum to remove any smell
6. Winterisation — waxes are removed to keep the oil clear at low temperatures

At each step, something is lost. The natural vitamin E? Gone. The antioxidants? Stripped out. The phytosterols that support heart health? Removed. What remains is a neutral, colourless, flavourless oil with a long shelf life and very little nutritional value beyond pure calories.

The Side-by-Side Your Body Feels

What the Research Actually Says

A 2019 study published in the Journal of Food Science and Technology compared cold-pressed and refined sesame oils and found that cold-pressed sesame oil had significantly higher tocopherol (Vitamin E) content and 3–4x higher antioxidant activity. These are the compounds that protect cells from oxidative damage — linked to reduced risk of cardiovascular disease and certain cancers.

Studies on cold-pressed coconut oil show high levels of medium-chain triglycerides (MCTs) — fats that are metabolised differently from long-chain fats, providing faster energy and supporting healthy weight management. Refined coconut oil has significantly lower MCT activity.

And on the other side: a 2021 review in the International Journal of Environmental Research and Public Health noted that repeated heating of refined vegetable oils (as happens in daily Indian cooking) accelerates lipid oxidation, producing compounds associated with cellular inflammation and increased cardiovascular risk.

The Hidden Cost of "Affordable" Refined Oil

Refined oil seems like the economical choice. A 1-litre bottle of refined sunflower oil costs ₹120–₹150. Cold pressed sesame oil costs ₹200–₹350 for the same volume.

But here's what that price difference doesn't account for:

• Cold pressed oil has a richer flavour — you naturally use less per dish
• The nutritional density means your body gets more from every meal you cook
• The long-term health cost of cooking with oxidised, nutrient-stripped fats is not reflected in the price tag

Our grandparents used small amounts of strong chekku sesame oil for their cooking. They didn't need large quantities because the flavour was so present. The shift to "light," refined oils didn't just strip nutrition — it trained us to use more oil to compensate for the absence of taste.

Which Cold Pressed Oil Is Right for Your Kitchen?

• Cold Pressed Sesame Oil (Gingelly / Nallennai): The ultimate South Indian kitchen oil. Perfect for tempering, rice dishes, chutneys, and traditional sweets. Highest in antioxidants of all common cold pressed oils.
• Cold Pressed Groundnut Oil (Kadalai Ennai): Best for everyday curries, sautéing, and frying at moderate temperatures. Rich, nutty flavour that enhances any dish.
• Cold Pressed Coconut Oil (Thengai Ennai): Ideal for South Indian breakfast dishes, Kerala-style curries, and as a natural hair and skin oil. High in MCTs.

👉 Shop Thinai Organics Cold Pressed Oils — wood-pressed using traditional chekku methods, 100% unrefined, no chemical solvents, no preservatives. Delivered across India.

The Stakes of Staying With Refined Oil

This isn't about being perfect or spending more money. It's about understanding that oil is not a neutral ingredient. Cooking with a nutrient-stripped, chemically processed fat every single day — multiple times a day — adds up over years.

The families making the switch back to cold pressed oils aren't doing it as a luxury. They're doing it because their grandparents were right, and the research confirms it. The "modern" oil was never an upgrade.

Frequently Asked Questions

Q: Is cold pressed oil safe for daily cooking?
Yes. Cold pressed oils like sesame, groundnut, and coconut have been used in Indian households for centuries. They are safe for daily cooking at low to medium heat — tempering, sautéing, and general cooking. For very high-heat deep frying, use cold pressed groundnut or coconut oil and avoid overheating.

Q: Does cold pressed oil go rancid faster?
Cold pressed oils have a shorter shelf life (3–6 months) than refined oils because they haven't been chemically stabilised. Store them in a dark, cool place in dark glass bottles. Buy in quantities you'll use within 3 months for best quality and freshness.

Q: Can I replace all refined oil with cold pressed oil in my cooking?
Yes, and many Indian households do. Start by replacing the oil you use most frequently — typically the one you temper with. Cold pressed sesame or groundnut oil is a natural first switch for South Indian cooking. The flavour adjustment takes 1–2 weeks; after that, most people find refined oil tastes flat by comparison.

Q: Is cold pressed coconut oil better than refined coconut oil?
Cold pressed coconut oil retains significantly more MCTs, lauric acid, and natural antioxidants compared to refined coconut oil (also called RBD — refined, bleached, deodorised coconut oil). For both cooking and skin/hair use, cold pressed is the superior option nutritionally.