Health Benefits of Macadamia Nuts

Evidence shows that eating a handful (30g) of unsalted nuts each day can reduce a person’s risk of developing cardiovascular disease by 21 per cent and coronary heart disease by 25 per cent.

Unsalted nuts are the ultimate snack, being rich in fibre, healthy fats, protein and antioxidants that support good cholesterol and reduce heart disease risk. Nuts keep us fuller for longer and help us to maintain a healthy weight, quite the contrary to what people may think.

Many people don’t realise that up to 26 per cent of the kilojoules in nuts are not absorbed by the body.

(Heart Foundation – February 2026)

About 15 macadamias, depending on kernel size.

(Heart Foundation – February 2026)

Macadamia nuts are a valuable addition to a healthy fat.

Macadamias contain predominantly monounsaturated fats, with smaller amounts of polyunsaturated fats. The main monounsaturated fats are omega 7 and omega 9, while the polyunsaturated fats include a balance of omega 3 and omega 6.

Together, these healthy fats support heart health, help maintain healthy cholesterol levels and assist the body in absorbing fat-soluble vitamins and other essential nutrients. This naturally balanced fat profile makes macadamias a valuable addition to a healthy diet,and enjoying a handful each day is a simple and satisfying way to increase intake of these beneficial fats.

(Reference: Australian Macadamia Society)

Macadamia nuts are low in carbohydrates, and combined with high levels of unsaturated fats, present an ideal snacking option for those aiming to maintain lower blood sugar levels. There is only a minimal spike in blood glucose levels post-consumption.

Encouragingly, preliminary evidence suggests that incorporating macadamia nuts into a carbohydrate-rich meal or snack can lead to a reduced rise in blood glucose levels shortly after consumption, this is particularly relevant to consumers following a LCHF (low-carb, high-fat) diet or managing diabetes. Increased use of personal continuous glucose monitors has elevated the conversation around blood sugar management.

(Reference: World Macadamia Organisation)

Regular nut consumption as part of a balanced diet is associated with a reduced risk of death from heart disease and a reduction in risk factors for cardiovascular and coronary heart disease. Regular consumption of nuts like macadamias has been shown to improve the ratio of ‘good’ (HDL) and ‘bad’ (LDL) cholesterol.

This is a great reason to grab a healthy handful of macadamias each day.

(Health & Wellbeing references: Australian Macadamia Society. Nishi, SK., et al. Effect of nut consumption on blood lipids: A systematic review and meta-analysis of randomised controlled trials. NMCD, 2024. Liu, M., et al. Nut consumption and risk of cardiovascular disease events and all-cause mortality: A systematic review and dose–response meta-analysis of prospective cohort studies. Archives of Cardiovascular Diseases, 2025. Houston, L., et al., Tree nut and peanut consumption and risk of cardiovascular disease: A systematic review and meta-analysis of randomized controlled trials. Adv Nutr, 2023. 14(5): 1029-49).

Many common snack choices are energy-dense without being nutrient-dense. A classic example is confectionery, which is high in sugar but offers little overall nutrition, vitamins or minerals. Macadamias are different. They are both energy-dense and nutrient-dense, and they taste delicious too, so you actually enjoy eating them!

Packed with healthy fats, dietary fibre and essential nutrients, macadamias help keep you feeling fuller for longer. As a naturally low-carb food containing protein, they provide a slow, steady release of energy, supporting satiety and helping to curb excessive calorie intake. They also digest slowly and have minimal impact on blood glucose levels.

Macadamias are also convenient, easy to carry or store for a quick, wholesome snack at work, while travelling or between meals.

(Health and wellbeing reference: Nuts for Life. Nutrient content of raw, unsalted nuts. Available at: https://www.nutsforlife.com.au/resource/nutrient-content-of-raw-unsalted-nuts/. Accessed: 24 April 2026).

Yes, just one handful of macadamia contains 2.4g of dietary fibre, similar to a slice of wholemeal bread.

Did you know there are different types of dietary fibre that benefit your body in different ways and macadamia nuts have a combination of these essential fibre types?

Dietary fibre is important for digestive and metabolic health⁵. Insoluble fibre is what we most often think of as beneficial for regular bowel function. It’s the undigested roughage that is not fermented and bulks up stools. Soluble fibre helps with cholesterol reduction and regulating blood sugar levels, as well as bulking up stools by absorbing water to aid regular bowel function. And the fibre in nuts, like macadamias, can help to reduce feelings of hunger, which is important in managing weight⁶.

(Health and wellbeing references: Food Standards Australia New Zealand (2025). Australian Food Composition Database – Release 3.0. Canberra: FSANZ. Available at: https://afcd.foodstandards.gov.au/. Accessed: 13 March 2026.

Alahmari, LA. Dietary fiber influence on overall health, with an emphasis on CVD, diabetes, obesity, colon cancer, and inflammation. Front Nutr, 2024. 11:1510564.

Akhlaghi, M., et al. Effect of nuts on energy intake, hunger, and fullness, a systematic review and meta-analysis of randomized clinical trials. Crit Rev Food Sci Nutr, 2020. 60(1):84-93).

Yes, Macadamia nuts are an ideal food for those with diabetes or raised blood glucose levels. Macadamias offer a tasty, satisfying way to support balanced blood glucose levels without compromising on flavour. 

Enjoying macadamias alongside carbohydrate rich foods, like breakfast cereal, rice dishes or fruit, can also help lower the overall GI of a meal by slowing digestion and the release of glucose into the bloodstream. 

Thanks to their low carbohydrate content, plus a balance of healthy fats, protein and fibre, macadamias help moderate post meal blood glucose spikes. 

Research shows that eating nuts can improve blood glucose levels in people with type 2 diabetes, while nutrients like polyphenols and fibre in macadamias also support better insulin function. Their healthy fats work synergistically to reduce demand on insulin production, helping create a steadier insulin response.

(Health and wellbeing references: Viguiliouk, E., et al. Effect of tree nuts on glycemic control in diabetes: a systematic review and meta-analysis of randomized controlled dietary trials. PLoS One, 2014. 9(7):e103376.)