There are 2 main types of polyunsaturated fatty acids - Omega-6 and Omega-3, both of which have had a lot of health and media attention for a while now.
As our bodies can’t make these essential nutrients, we need to have them in our diets.
Omega-6 fatty acids are needed for normal growth and development and are found in many food sources, so we get plenty of these in our diet.
- Vegetable oils
- Many processed foods
- Dairy products
Omega-3 fatty acids are needed in smaller amounts, but are essential in helping to keep our brains and hearts healthy. Studies have shown that they help to reduce heart attack and stroke risk by:
- Reducing blood clot formation risk.
- Preventing formation of fatty deposites in the arteries.
- Lowering triglyceride levels.
To maintain cardiovascular health, the recommended intakes of Omega-3s are a minumum of 500mg per day. For adults already living with coronary heart disease, the recommended intakes are 1g per day.
Their are limited sources for omega-3 fatty acids available in our diet, with the highest levels and most easily absorbed coming from oily fish.
- Oily fish
- Vegetable oils (rapeseed)
- Green leafy veg
Vegetarians and Vegans
As those following vegetarian and vegan diets will be unable to obtain the more potent forms of omega-3 fatty acids, EPA and DHA from fish, the main sources of omega-3s for these groups will be in the plant form alpha-linolenic acid. Good sources of this are listed above.
Competing fatty acids
As omega-6 fatty acids compete in the body for the same enzymes and pathways as omega-3 fatty acids, therefore its recommended that these groups limit their omega-6 intake. Switching from oils to wholefoods will help this:
- Sunflower seeds
- Sesame seeds
- Pumpkin seeds
- Wheat germ
Choosing foods below which are high in the omega-9 monounsaturated fatty acid will also help reduce omega-6 intake.
- Olives and Olive oil
- Canola oil
A daily supplement of DHA enriched microalgae (up to 300mg per day) will also help ensure sufficient intake of omega-3 fatty acids.