CBS News HealthWatch – Seed oils are making headlines, prompting fears around whether they can negatively affect your health.
Earlier this week, a study published in the journal Gut led to headlines likening seed oils to colon cancer fuel — but already some experts have said the headlines are misleading.
What are seed oils?
Unlike other vegetable oils, which are derived from the fruit of a plant, seed oils are derived from the seed of a plant. For example, sunflower oil is made from sunflower seeds, making it a seed oil, whereas olive oil is made from whole olives, the fruit of the plant.
Some seed oils like sesame, for example, can also be fragrant and add flavor to a dish or dressing, making them popular in some kitchens.
What health risks do they pose?
“Based on the evidence we have, seed oils don’t pose any health risks,” Kristina Petersen, associate professor of nutritional sciences at Penn State University, told CBS News.
“In fact, when you look at the evidence, it shows that intake of seed oils, instead of fats like butter and other animal fats, actually improves blood cholesterol levels and lowers risk of diseases like heart disease (and) Type 2 diabetes.”
Like all oils, seed oils contain fat, which is important for a balanced diet but in certain quantities. But the type of fat, saturated or unsaturated, is also important.
Seed oils are rich in unsaturated fats, which can include both monounsaturated and polyunsaturated fats. Research suggests these fats may decrease “bad” and raise “good” cholesterol.
These oils are also high in the omega-6 fatty acid linoleic acid, which, while essential for bodily functions, should be balanced with omega-3 fatty acids, Shamah said.
Why do some people consider seed oils bad for your health?
Seed oil critics say linoleic acid, a omega-6 fatty acid found in these oils, breaks down into toxins when used for cooking, causing numerous health issues including inflammation, a weakened immune system and contributing to chronic illnesses …
