Nuts and Seeds - Compared (and which ones are best for athletes)!

You’ve probably heard the chatter about nuts and seeds being powerhouses of the nutrition world.  Their status has been further enhanced of late with the trend towards plant-based eating.  No doubt about it, seeds and nuts certainly deserve their reputation for packing a decent nutritional punch, and if you aren’t eating them already, here is some info that might get you interested!

So which nuts and seeds are top of the table when it comes to nutrition?  There are so many different options you could include in your snack bowl or tub.  Not all nuts are equal - most nuts are seeds of a fruit (peanuts are seeds of a legume)- but they all have their own unique nutrition make-up and benefits. 

In the past, almonds were always considered right at the top of the tree when it came to best choice of nut – mostly due to their low fat content, at a time when fat was falsely seen as the enemy!  Cashews contain almost identical fat grams to almonds and interestingly the humble peanut is in fact lower fat and higher protein than both almonds and cashews!  These days, however, we tend to focus on more than just the fat and protein content, and look a little more closely at the vitamin and mineral content and associated benefits. 

I was interested to do some comparisons, so I got onto Foodworks (and USDA for hemp seeds) to put together a summary table below that lists the key macro- and micro-nutrient values for common nuts and seeds.  The amounts listed are per 30g of nuts, which is the recommended serving size – around a small handful for an adult.  The nut or seed with the highest amount for each nutrient is highlighted in yellow in that column.

Depending on your specific nutrition needs you may prioritise different types of nuts or seeds.  For example, if iron is a nutrient of focus for you, then cashews, chia seeds and pumpkin seeds are a great choice.  Walnuts, chia seeds and flaxseeds are the highest for  omega-3 and chia, almonds and flaxseeds highest in calcium.

The most interesting thing I noted was that the winners for each nutrient category seemed to mostly come from different nuts or seeds – there wasn’t one that was king of the castle for all nutrients (other than one exception - let’s talk about hemp seeds). The stats appear to say it all – amazing nutrition capabilities but unfortunately hemp seeds are a no-go for elite athletes.  Although hemp seeds are now legal for sale in Australia, there is a potential risk that they may contain trace amounts of THC that could be detectable via WADA/ASADA testing – a banned substance in competition.  

Interestingly, seeds overall fare strongly when it comes to vitamins and minerals compared to nuts, but are often easily overlooked. Why not try adding a few more seeds to your day:

-        Add to porridge, home-made muesli

-        Roast and add to salads - like sunflower seeds in Roasted Carrot and Kale Salad with Grilled Chicken and Lemon Dressing.

-        Make some snack balls or slices – try my Almond Balls recipe which is packed with sunflower and sesame seeds

-        Add to smoothies (eg. almonds in my Recovery Smoothie recipe)

Don’t feel you need to always choose raw with your nuts and seeds – a little roasting and salting is fine (depending on overall salt intake) and for some athletes salt can be helpful for hydration (speak to an Accredited Sports Dietitian for more info).

And don’t worry about activating them either – your body has the digestive equipment to devour and conquer all manner of nuts and seeds – although some people may have intolerances to certain varieties, and nuts and seeds can cause bloating and stomach upset if you over-do it. 

Nuts and seeds can sometimes seem expensive, but if you stick to small serves and choose a combination of different types they can play an important role in keeping you healthy and well, and need not break the bank.  For example, sunflower seeds, flaxseeds and peanuts are on the less expensive side, so use these as a base and add smaller amounts of the others that may be more pricey.

If I really had to pick my favourites for athletes, here they are below:

Almonds  - Protein, Fat, Fibre, Vitamin E, Calcium

Cashews – Protein, Fat, Iron, Zinc

Walnuts – Omega-3 and decent vitamin/mineral content across the board

Peanuts – special mention – highest protein and lowest fat of all nuts!

Chia – Fat, omega-3, fibre, calcium, iron

Flaxseed - Omega-3, fibre, potassium, magnesium, calcium

Pumpkin seeds – Protein, potassium, magnesium, iron, zinc

If you are an athlete not subject to drug testing, then hemp seeds are also a useful addition for their nutritional value and benefits.

Overall, different nuts and seeds are rich in different nutrients.  So the real key is to mix up your intake for a great variety of nutrients, as well as flavours, texture and enjoyment.

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Why junior athletes are not small adults when it comes to body composition

I am fortunate to work with many talented young athletes and teams where performance is a strong focus.  I enjoy seeing young athletes learn, progress and improve – but I am also acutely aware of the potential negative aspects of a high performance environment for growing and developing kids and adolescents.  I watched one of the ‘The Mighty Ducks’ movies over the weekend with my family and it was a great reminder of what junior team sport is all about – teamwork, friendship and fun (as well as hard work!).  Those who have an influence on juniors can play a role in either helping or hindering development and performance, and the importance of enjoyment should be given due attention, even (or especially) within an increasingly competitive environment. 

Many junior athletes experience significant, and sometimes unbearable, pressure to perform.  Pressure can come from various sources, both internal and external, with a focus on performing at their best, beyond basic genetic ability.  This is where body composition (both muscularity and/or leanness) can become a focus, and for some this experience is far from fun.

Discussions around body composition – how much body fat or muscle an athlete has – and its impact on performance are an accepted part of professional senior sport.  Fortunately, sports dietitians are no longer known ONLY as the ‘fat police’ in teams, but a reasonable portion of a team dietitians’ work continues to involve measuring, monitoring and setting goals with athletes around weight and body composition.  Thank goodness the days are (mostly) long behind us where player weight and skinfolds are posted up on the wall alongside the 3km time trial results, in full view of all passers by.  Naturally, in a competitive sporting environment, the first thing people want to know is who came first….or last.  The impact of a certain body composition result on a player’s performance, however, is only one factor contributing to performance.  Being the leanest person in a team does not necessarily translate to being the best player.  This is particularly true for junior athletes – in fact we might question the degree of significance of body composition for sports performance at a junior level.

Kids and adolescents are not just small adults and need to be acknowledged and treated as such.

The problem

Awareness at the elite level has improved over the years with regard to individualisation of body composition goals and recognition that it is one of a number of factors that contribute to performance.  However this understanding has not necessarily translated to junior ranks (although many clubs and sporting organisations are doing a great job in this area).  Whether due to increased competitiveness in sport, impact of social media, or other factors, when you also add in COVID restrictions of late, these can all have a significant impact on those individuals who are susceptible to having concerns around body composition and body image.  Both boys and girls can be affected, but of late the stereotypical client that I see with body composition/body image concerns are 15 year old females.  Observation only, but for me it bring backs memories of myself at that age (as pictured in my local rep netball team) and dealing with my own stuff when it came to pressure to improve my performance, look a certain way and feel good about myself.

Why is it a problem?

Many factors can contribute to body composition and body image issues.  Some are inherent to an individual, but we cannot ignore external factors such as social media and pressure from peers, parents, coaches or others with influence. 

‘Comparison is the thief of joy’- I can’t remember where I read or heard this quote, but it always sticks in my mind when I think about teenagers these days who do a lot of sport.  Comparison to images on social media and comparison to their sporting idols, as well as their team mates and opponents. 

Realistic goals

I meet many adolescent males who want to be built like an elite AFL or NBL/NBA player  - NOW!  I guarantee that the majority of adult elite athletes did not have the same amount of muscle mass or level of leanness when they were 16 that they do when they are 25 years old, and we need to remind young athletes of this.  Bodies are designed to grow and develop throughout adolescence and teenagers develop at different rates.  The only person you should be comparing yourself to is you.  Easier said than done, but the goal is to get the best out of your own performance.  Sometimes the anxiety associated with striving to achieve a body composition that is unrealistic at a particular age/stage can have a significantly negative impact on performance, which increases the risk of young talented athletes dropping out of sport due to disordered eating or mental health issues.

There is huge variability between individuals with regard to body dimensions, weight, body composition and health.  These characteristics are largely determined by genetics, however environmental factors do play a role, with nutrition and training making an important contribution to our health, well-being and body composition.  A wide range of bodies can also be elite competitors – it’s important to remember that.

Too much focus on body composition

For many sports, you can’t get away from the fact that body size and composition has an impact on performance. For some sports, a bigger body size may be advantageous for performance – for example in basketball.  As young athletes progress to higher levels and competition gets tougher, there may be a greater need to consider body composition, however great care should be taken with regard to sensitive messaging around body composition for junior athletes. 

Junior athletes need to progress according to their stage of growth.  Young male athletes are often desperate to gain muscle mass, and although they feel like it is super important right now, there is really no rush.  A smaller junior athlete may rely on their speed and agility as their performance strengths – just because team mates that may be at a more advanced stage of growth and have more muscle, this may not be the best goal for them. Goals should be tailored to individual needs and support existing strengths and genetic potential, and it can be beneficial to seek professional opinion and support, particularly when there are specific needs and sensitivities.

Nutrition for junior athletes

Nutrition strategies for junior athletes should focus on adequate fuelling, recovery, hydration and sport-specific needs as priorities.  When an overall healthy eating strategy is adopted, with consideration of sports nutrition principles applied to training and competition (and individual growth stage and hunger!), body composition will often work itself out.  For those junior athletes who may need some extra support, an accredited sports dietitian can assist junior athletes and their families to make nutrition choices to support their training, competition and day-to-day needs while also considering their growth, health and well-being.

For regular nutrition updates, you can follow me on Instagram, Facebook and LinkedIn for nutrition updates and practical performance nutrition ideas.

Intermittent Fasting for Athletes

Image courtesy of www.afl.com.au

Intermittent fasting is by far the diet that I get asked about the most. The word ‘diet’ is often associated with a short-term fad, however intermittent fasting (IF) has indeed become a way of life rather than a quick fix for many individuals. But is this approach suitable for athletes?

Last year I was interviewed for an AFL article on this very topic, as a number of senior AFL players were reportedly pursuing IF as a high performance nutrition strategy.

The link to the article is below - it doesn’t cover every aspect of IF so please get in touch if you are interested in more individualised advice to suit your needs, as everyone is different. Am I a fan of IF? It depends……

Why You Can’t Meet Jack Viney for Breakfast as published on www.afl.com.au

Don’t forget, you can follow me on Instagram, Facebook and LinkedIn for nutrition updates and practical performance nutrition ideas.