Mustard Oil Benefits: Is It Good for You?

Mustard oil, sarson ka tel, is one of the oldest cooking fats in the Indian kitchen, and by its make-up it is a reasonable everyday oil. It is high in monounsaturated fat (MUFA), low in saturated fat, carries some plant omega-3 (ALA) and omega-6 (linoleic acid), and like every purely plant oil it has no cholesterol. It also has a high smoke point, around 250 C, which is why it stands up to tadka, deep-frying and searing without breaking down. The real caveat: traditional mustard oil is naturally high in erucic acid, and for that reason the U.S. FDA does not permit it as a cooking oil there. In India it is a fully permitted, FSSAI-regulated edible oil and a daily staple across the east and north. So whether it is good for you depends mostly on how you use it. In normal culinary amounts, as part of a varied diet, it is a sound choice for most healthy adults.

What is mustard oil, and what makes kachi ghani different?

Mustard oil is pressed from the seeds of the mustard plant, what we call sarson and rai. Kachi ghani means the seeds are cold-pressed: crushed slowly at low temperature with no added heat, no chemical solvents, and no bleaching or deodorising. That is why real kachi ghani oil keeps its deep amber-gold colour, its sharp pungency, and the seed's natural aromatic compounds. Refined oils, by contrast, are extracted with heat or solvents and then degummed, bleached and deodorised, which strips out the bite and colour but also much of the character. Yellow mustard oil usually refers to this pale-gold cold-pressed oil from yellow mustard seed; the benefits people ask about are essentially the same across sarson varieties.

What are the main benefits of mustard oil?

The clearest benefits of mustard oil sit in its fat profile and in the way it behaves in the kadhai. It is naturally high in monounsaturated fat and low in saturated fat, and it supplies both omega-3 (alpha-linolenic acid) and omega-6 (linoleic acid). Nutrition bodies such as Harvard's Nutrition Source generally treat that kind of unsaturated-fat profile as favourable when it replaces saturated fat rather than adding to it. Its high smoke point means it holds up to Indian high-heat cooking. Beyond the kitchen, mustard oil is traditionally used across India for body and scalp maalish, and many families swear by it, but that is tradition and anecdote, not proof of a medical benefit.

• A favourable fat profile: high in MUFA, low in saturated fat, with some plant omega-3 (ALA). It works best when it replaces other fats in your diet rather than piling on top of them.
• A high smoke point, around 250 C (480 F), which suits tadka, frying and searing where more fragile oils would break down.
• No cholesterol, as is true of every purely plant oil, a point USDA FoodData Central reflects for vegetable oils.
• Flavour that does real culinary work: the pungency of kachi ghani is what defines Bengali and Bihari fish cooking, sarson-heavy sabzis, and most Indian achaar.
• A long tradition of use in oil massage (maalish) and home remedies. These uses are cultural and valued by many, though they are not clinically established.

Can you eat, cook with, or even drink mustard oil?

In India, yes, you can eat mustard oil and cook with it every day. It is a permitted edible oil regulated by the FSSAI and a staple in millions of kitchens. Use it the way it is meant to be used: heat it once to smoking point so the raw pungency mellows, then bring it down before you add your tadka or masala. Drinking mustard oil is a different question. Swallowing spoonfuls of raw oil as a tonic is not something we would suggest; there is no good evidence it helps, and any oil is very calorie-dense (roughly 884 kcal per 100 g, per USDA FoodData Central). Treat it as a cooking fat, use it in sensible amounts, and rotate your oils through the week rather than relying on any single one.

What are the disadvantages and side effects of mustard oil?

The main talking point is erucic acid. Traditional mustard oil is naturally high in it, very roughly 20 to 40 percent or more of its fat, and in animal studies high erucic-acid intake has been linked to heart-tissue effects, which is one reason several regulators cap it in edible oils. The U.S. FDA does not authorise mustard oil as a cooking oil for domestic sale, and imported mustard oil in the US must be labelled “For external use only”. The EU and Codex Alimentarius set erucic-acid limits for edible oils. This is where the is-mustard-oil-banned worry comes from, but that is a US and Western regulatory position, not an Indian one. In India, mustard oil remains a permitted, FSSAI-regulated food. Low-erucic-acid varieties (double-zero or canola-type mustard) also exist. Beyond erucic acid, the practical downsides are simple: it is still 100 percent fat, so overuse adds up, and a small number of people get skin irritation from topical use.

Is mustard oil safe during pregnancy or for babies?

For pregnancy, the straight answer is to talk to your own doctor. Mustard oil is used in cooking throughout pregnancy across India, but we will not make safety or fertility claims either way; your obstetrician or a registered dietitian knows your situation. For babies and newborns, be more careful. Mustard oil is a traditional maalish oil, but some guidance cautions against using it on a newborn's delicate skin, and infant feeding and skincare should always go through your pediatrician first. When it comes to what you cook for an infant, again, ask the pediatrician rather than any article, this one included.

Can you eat mustard seeds too?

Yes, mustard seeds (rai, sarson) are an everyday Indian spice, not just the source of the oil. They are what crackle in a tadka, what flavour achaar and sambar, and ground mustard is the base of Bengali kasundi. Eaten as a spice, in the small quantities cooking uses, they are a normal part of the diet for most people. One genuine caution: a mustard allergy is a real, if uncommon, food allergy, so anyone who reacts to mustard should avoid the seeds and the oil alike.

Good for you, bad for you: with mustard oil the honest answer is that it depends on how much, how often, and where in the world you are cooking.

A quick note: this is general information for home cooks, not medical advice. Mustard oil's composition and its place in Indian cooking are well established, but individual health needs vary. If you have a heart condition, are pregnant, are feeding an infant, or have any specific concern, please speak with a qualified doctor or registered dietitian before making changes to your diet.