Kate Save on Food as a Performance Tool

energy episode health and lifestyle high performance insulin resistance kate save metabolic health nutrition Jul 27, 2026

Episode 42 · Kate Save · 56 min

With Layne Beachley AO & Tess Brouwer

 
Listen on Spotify Watch on YouTube Listen on Apple Podcasts Listen on Amazon Music

About this episode

This week Layne and Tess sit down with Kate Save: accredited practising dietitian, clinical exercise physiologist and founder of Be Fit Food. Kate’s wake-up call came early. Emergency surgery at 20 for a condition doctors said she would not live past 30, and years later, losing her mum to a cancer the system kept sending home.

Then it gets practical: why fat arrives after 40 even when you are doing everything right, how insulin resistance builds for 10 to 20 years before a standard test flags it, why muscle is the sink for glucose, how much protein you actually need, and what whole food does that supplements cannot. Food, treated as a daily performance tool.

Powered by AIA

Calculate your AIA Vitality Age in less than 5 minutes, and get a better understanding of your health.

AIA Age Calculator

Key takeaways

  1. Food is a performance variable, not a diet. Kate reads nutrition through metabolic flexibility, cognitive output and physical longevity, not weight loss. Fuel decides how you show up.
  2. Insulin resistance builds silently for 10 to 20 years. Blood sugar stays normal while insulin climbs. Ask your GP for fasting insulin and a HOMA index; it is not on the default test list.
  3. Muscle is the sink for glucose. Without enough muscle, excess carbohydrate has nowhere to go but fat stores. Strength train three times a week, 30 minutes, and protect your lean mass as you age.
  4. Protein: 1.2 to 1.6g per kilo, whole food first. A 2025 clinical trial found whole food protein assimilates into muscle better and lifted 45 beneficial gut bacteria, while a supplement-only diet cut gut bacteria. Supplement second, not first.
  5. If you look well, you don’t get seen. Kate’s mum was sent home from emergency three times. Know your body, keep investigating, and act on the signal; your gut sends more messages up than your brain sends down.
  6. The Do It For Life toolkit. Vegetables of every colour, leftovers packed the night before, whole food protein at each meal, and one health check: the HOMA index for insulin resistance.

 

Chapters

Tap any clip to jump the player above to that moment.

 

Transcript

Auto-generated, may contain minor errors. Expand a section, or tap “Play this clip” to jump the player to it.

0:43Fuel as a performance variable

Layne, Tess & Kate (0:43):

Welcome back, Dream Team. Today, we are cutting through the noise of fat diets and talking about fuel as a high performance variable. Our guest today sits at a very rare intersection, I must say. She's an accredited practicing

1:37Rapid fire: creatine, keto and cold plunges

Layne, Tess & Kate (1:37):

Thank you for having me. All right, Kate, we've got a rapid fire for you. Okay, it's this or that. Now, you're an expert, so you got to keep it short. Okay. Creatine or coffee? Creatine.

5:27Kate's wake-up call at 20

Layne, Tess & Kate (5:27):

But we love to start every chat with the same question, which was Kate, what was your wakeup call? As you can see, I'm not black and white. I'm very gray. Oh, you are wearing black and white. Oh, I am. I don't like the short fire one thing.

8:23The midnight run before surgery

Layne, Tess & Kate (8:23):

Yeah. At the party I just had fun. The next day I decided to go for a run. And I wasn't a runner then. And I didn't know where I was going to run, but I live on the Morningington Peninsula. So I ran towards the beach. Then I ran along the beach for as long as I could.

12:30Losing her mum and the missed diagnosis

Layne, Tess & Kate (12:30):

Well, 20 years later, I found my mom dead. So, um, yeah, that was a surprise because she was fit and healthy, 70, 55 kilos, 2 hours of exercise a day, never had a health condition, had not been in

15:27Why high performers ignore warning signs

Layne, Tess & Kate (15:27):

Yeah, that's the I think there's a common theme amongst the people that we have on this podcast and that we meet, the high performers. They want quick answers. Mhm. They want to be seen and get out. They don't want to be a burden. And they just think, "Oh, I'll deal with it tomorrow." Or, "It's not that bad. It's just a

16:45The science of trusting your gut

Layne, Tess & Kate (16:45):

You need to, particularly as women, we're very intuitively strong. So, I'm not sure if you guys have read a book called The Female Brain. It is like one of my favorite books. The hardest thing to read because it's so scientific. But basically with men's and women's brains,

19:30The perspective reframe

Layne, Tess & Kate (19:30):

So how do we stay out of the thinking brain and stay and stay connected to the intuition? That's the perspective, isn't it? that um I think I go back to those really bad

22:15Gut health as a performance foundation

Layne, Tess & Kate (22:15):

Life is hard. And one of the things I wanted to do today and to bring this back into trusting your gut and and I love that it's taken this sort of mind body angle because we never know where these chats are going to go that protecting your gut health

23:47Belly fat after 40: what is really going on

Layne, Tess & Kate (23:47):

So, one of the top questions at the moment is why am I gaining so much belly flat fat when I'm doing everything right now? Some of this was talking about like, why am I gaining weight when I eat well? Why does my old diet no longer work? Um, I've hit 40. What the (expletive) That was my search.

26:44Insulin resistance explained

Layne, Tess & Kate (26:44):

But there's got to be some sort of insulin resistance going on as well. And insulin resistance is uh when you eat the carbohydrate and your blood sugar levels go up, you secrete insulin to bring them back down. When you get a little bit of insulin resistance, which

29:59Layne's blood results read live

Layne, Tess & Kate (29:59):

In preparation for today, I got my blood test done last week and you asked me I actually did this in a fascinating way cuz I wanted I have the greatest respect for the medical system and the alternative medicine system as well and

32:30Muscle is the sink for glucose

Layne, Tess & Kate (32:30):

Yeah. And your insulin sensitivity is in the normal range. It's not in the optimal if you want to be lame. What does that mean?

36:31How much protein you actually need

Layne, Tess & Kate (36:31):

There is such a big discussion around protein maxing, fiber maxing right now. What's the perfect amount for someone like Lane and I per day in protein? 1.2 to 1.6 g per kilo of body weight. But I

38:20Whole food vs supplements: the evidence

Layne, Tess & Kate (38:20):

So, there was a clinical trial published October 2025 that compared a supplement-based diet made of protein powder with a whole food diet with protein in it. The outcome of that study, 47 women that went on this diet

41:07Nutrition for busy people

Layne, Tess & Kate (41:07):

understand this from a workplace environment. We work with a lot of teams and one of the questions is like, um, nutrition for busy people. Yeah, it came up. It comes up all the time and I we say the the person who is the who is the most bravest at lunchtime is the

43:41Invest in your health: food is medicine

Layne, Tess & Kate (43:41):

So you have to invest in your health. It's it is the only asset that you have for life that is worth investing in. So if people are putting other assets in

46:39The Do It For Life toolkit

Layne, Tess & Kate (46:39):

Kate, you are a powerhouse of information. One thing I find is that people are overwhelmed, including me, in what they can do right now. So with the busy worker in mind with lots of priorities and kids, can I give you a few key pointers that we want one practical toolkit tip on?

48:44Metabolic health: test it, reverse it

Layne, Tess & Kate (48:44):

next 10 to 20 years. Wonderful. Can I just ask one question around metabolic health? Because I know Peter talks a lot about metabolic function as being a foundational pillar or indicator as to how we're going. How does someone identify their metabolic function?

51:15Your wake-up call: start with energy

Layne, Tess & Kate (51:15):

Well, dream team, take this as your wakeup call. It is so important that the food that we eat, the way that we nourish ourselves, the way that we train has a huge impact on our quality of life and how we're showing up for our loved ones so we don't end up passing away too

Your hosts

LB

Layne Beachley AO

Seven-time world surfing champion & AWAKE co-host

On rebuilding muscle through menopause and having her blood results read live.

TB

Tess Brouwer

AWAKE co-founder & co-host

On the energy dip at 40 and asking your GP better questions.

Join 12,000 Readers

Own Your Week Email Broadcast

The biggest moments, practical tools and real-life takeaways from each episode, plus the latest from Awake Academy, delivered in one powerful weekly email.