Yes, linseed oil, also known as flaxseed oil, is generally considered food-safe when it is properly prepared and used. However, it's important to distinguish between the two main types of linseed oil: raw linseed oil and boiled linseed oil.
Raw linseed oil is made purely from flaxseeds (linseeds). It's a common cooking ingredient, especially in vegetarian and vegan diets, as it offers numerous health benefits. Raw linseed oil is rich in omega-3 fatty acids, which can help to improve heart health. It's also packed full of dietary fiber, aiding digestion, and has been researched for its potential ability to reduce the risk of cancer and improve skin health.
On the other hand, boiled linseed oil is not safe for consumption. This product has been treated with chemicals (including heavy metal compounds) to speed up the drying process when it's used in various applications like painting or as a wood finish. Consuming boiled linseed oil could be harmful for the body due to these chemical additives.
For both types, storage conditions are important to consider. Linseed oil in general is known for its low smoke point and can easily turn rancid and develop harmful compounds if improperly stored, so it's important to keep it in a cool, dark place and consume it before the expiration date.
Despite its benefits, it's also worth noting that linseed oil should not be consumed in large quantities due to the high number of calories it contains. Moreover, it shouldn't be heated due to the risk of oxidation.
While raw linseed oil is safe and beneficial for consumption, all dietary changes should be done responsibly. As such, it may be ideal to consult with a healthcare provider or nutritionist before incorporating it significantly into your meals. They can provide personalized advice based on your individual health needs.