Superfoods are big money. With their promises of everlasting youth and renewed vitality, consumers will happily spend the big bucks without further question. Some really are super, some are flops (ie. noni juice). We have always known that seeds hold a high nutritional value, but we’ve moved past the common sunflower, pumpkin and sesame seed and are now looking for something new and edgy. Chia seeds, flaxseeds and hemp seeds have all made their mainstream supermarket debut over the last few years. As super as they all are, each of them has individual health properties that are as unique as their consumers are. Some are better suited to certain individuals, and some consumers like to factor in their environmental standpoint. Which one is better for you…?
Let’s Talk Hemp Seeds
All the rage in Canada, not available in Australia*. What a shame. Hemp seeds are derived from industrial hemp which is a strain of the cannabis plant. Don’t get too excited, they have been bred to contain low levels (0.3%) of THC which is the prohibited and active component of marijuana.
*Foods derived from hemp are not permitted in Australia or New Zealand, although New Zealand does permit hemp oil products.
Nutritional Benefits of Hemp Seeds
Hemp seeds are a great source of high quality protein providing ~ 7-11g per 2 tbsp. Hemp seeds also provide a balance of omega-6 to omega-3 fatty acids at a ratio of 3:1 which if you remember from my post How To Get Your Omega-3s For The Vegetarians it is important to ensure a good balance of these two for maximum benefit from the omega-3s. Hemp seeds also provide an impressive array of phytochemicals, trace minerals and vitamins. Hemp seeds lack any clinical research into their numerous health claims, but as they have a similar nutritional composition to other nuts and seeds we can assume they provide similar health benefits.
The Sustainability of Hemp Seeds
Hemp can be grown in a variety of climates and soil types. As it grows quickly and like a “weed”, this decreases the need for most pesticides, herbicides and fungicides and also means hemp requires less water compared to most other crops. Hemp can also replace cotton in clothing, trees for paper making and can be used as a biofuel. More and more products are being made from hemp including carpet, cosmetics, diapers, nets and shoes. What might be most exciting is that hemp may one day be replacing plastic. For more information on the sustainability of hemp seeds see Huffington Post: Why Hemp, The Sustainable Wonder Crop, Is Sweeping The Nation.
Who Should Be Eating Hemp Seeds
If you are looking for a good source of protein to add to your morning smoothies, then hemp seeds are for you. You may also want to support this super “green” crop from an environmental perspective. Growers of hemp seeds suggest adding the seeds to smoothies, yogurt, oatmeal, sandwiches, salads, lasagna, stir-fries, baked goods, ice cream and cereals.
Chia Seeds – AKA Salvia hispanica L.
Thank you Kelly Slater for helping to propel this tiny seed to stardom. Chia has a long history of human consumption, originally used by natives of Mexico and Guatemala. It is thought that medicinal use may have been one of chia’s primary roles. For food, in pre-Columbian Mexico, chia seeds were ground into flour and used to make tortillas, tamales and a variety of different Aztec beverages. The beverages were called chianatoles – chia drinks are still consumed today and can be referred to as chia fresco or agua de chia (chia mixed with lemon, sugar or fruit juice). The are also great used as a base for a breakfast pudding as in this Simple Breakfast Chia Seed Pudding Recipe with Wild Rice, Maple Syrup and Almonds Recipe, added to smoothies or snack balls like my favourite Raw Date Fudge Balls.
Nutritional Benefits of Chia Seeds
Chia seeds are the only plant food that is higher in omega-3 fatty acids than flaxseeds, with the oil containing about 63% omega-3 fatty acids. Like all seeds they are a good source of vitamins, trace minerals, essential fatty acids, plant protein and phytochemicals. A 2 tbsp serve of chia seeds also offers 3.3mg of iron and 142mg of calcium. Chia seeds are also an excellent source of fibre comprised of about 4g per tbsp. Recent research has suggested that chia seeds are beneficial in lowering systolic blood pressure and markers of platelet aggregation. They have also been shown to improve glycemic control and reduce cardiovascular risks factors in humans. Chia seeds can also be sprouted which may help to increase the bioavailability of some nutrients; see Sprouted Summer Salad Recipe: The How To and Health Benefits of Sprouting Food for more information on sprouting.
The Sustainability of Chia Seeds
Chia seeds are grown in Australia, Mexico and several countries of Central and South America. Some companies that grow chia in its native habitat claim that their chia is grown traditionally and sustainably without the use of pesticides.
Who Should Be Eating Chia Seeds
Most people would benefit from the addition of chia seeds into their diet. With their high vitamin and mineral content and numerous health claims backed up by clinical research, it would be difficult to think of a reason to not be eating chia. The main downside to chia is the price; if budget is a factor you could probably be finding similar health benefits from an alternative seed. If you live in Canada, you might want to consider food miles as chia seeds are not grown locally.
Let’s Talk Flaxseeds AKA Linseeds
Flax was traditionally used as an ingredient in paints, fiber and cattle feed. It’s earliest evidence of human use was in the Republic of Georgia where it was used in textiles dated back 30.000 years ago. One of its earliest evidence of culinary use was in ancient Greece where it was highly prized for its health benefits. Flaxseeds can be eaten whole or ground up. They make a great addition to smoothies and sweets. I like mine in Healthy Toasted Muesli with Nuts, Dates and Seeds as pictured above.
Nutritional Benefits of Flaxseeds
Of all the seeds, flaxseeds appear to offer the most potential for human health. They have the best omega 6:omega-3 ratio of about 1:4 which goes a long way towards helping correct an imbalance of essential fatty acids. The high amount of omega-3 has also been shown to reduce triglyceride levels, blood pressure and the tendency to form blood clots. Research also suggests that flaxseeds are also the richest known source of the potent anticarcinogen lignans, with around 75-800 times the levels of most other plant foods. Lignans have an antiestrogenic effect, possibly reducing the risk of hormone-related cancers. Flaxseeds also appear to improve glycemic control in people with diabetes. They are also rich in phytonutrients and are one of the richest sources of boron.
The Sustainability of Flaxseeds
Flaxseeds can be grown locally; most Canadian flaxseeds being grown in the prairies, and organic varieties in the Okanagan Valley of B.C. Be careful of a genetically modified flax now being marketed as “a new and improved version of flaxseed oil” under the trade name “Linola oil.” In fact the only improvement is in the length of time the oil will last on the store shelf. It has also been show to have a lesser amount of omega-3 fatty acids (down to 2% from 57%) with an increase to about 70% omega-6 fatty acids (an unbalanced ratio of 35:1) – what’s the point?
Who Should Be Eating Flaxseeds
Flaxseeds are the most cost effective of these 3 seeds and can be a quick and easy addition to morning smoothies or meal time salads. Flaxseeds are best for those that can eat them regularly as they are prone to going rancid quite quickly. Store yours in the fridge and ensure you are buying from a reputable source to ensure you are not eating rancid flax! I suggest purchasing whole flaxseeds and not ground flax to ensure the nutrients are intact.
In A Nut Shell – Which One Is Best For You
- Flaxseeds and chia seeds are nutritionally similar in omega-3 content, and contain more than hemp seeds,
- Hemp seeds have the highest amount of protein,
- Flaxseeds are the most cost effective,
- Chia seeds are a great source of calcium, offering 142mg per 2 tbsp serve (RDI ~1000mg/day),
- Flaxseeds contain lignans which may help to reduce the growth of human cancer cells,
- Hemp seeds get a gold star for sustainability,
- Flaxseeds go rancid quickly, make sure you store them in your fridge and purchase from a reputable source,
- All seeds offer similar as well as their own unique health benefits. Including a wide variety of different seeds our your diet ensures access to all the essential fatty acids, vitamins, minerals, phytochemicals, and high amounts of vitamin E.
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