Introduction

Passionfruit is a popular tropical fruit known for its unique taste and wide range of health benefits. The two main and most common types of passionfruit are the yellow and purple fruit. The yellow passion fruit is larger, approximately 6-9cm in size and the purple is 4-9cm.¹ The fruit has a hard outer shell which is cut open to a runny juicy seeded centre. This exotic fruit grows in subtropical climates and is popular worldwide for its range of benefits from taste, cosmetic uses and as a remedy in folk medicine. With great nutritional value, passionfruit is a great addition to any diet. Passionfruit is also believed to aid in weight loss. In this article, we will explore the nutritional profile of passionfruit and reach a conclusion as to whether passionfruit can in fact help with weight loss.

Nutritional profile

Passionfruit and weight loss: Mechanisms

Low-Calorie fruit

Passionfruit is a low-calorie fruit. This low-calorie amount combined with high fibre means that it is a low energy-dense fruit and lets us feel full quicker, which can be useful when trying to manage weight. 

High fibre content

Passionfruit is dense in carbohydrates, and most of the macronutrients of the fruit are concentrated in the seeds. Most notably, passion fruit contains a significant amount of dietary fibre, making up 40% of recommended DI. 

Antioxidants and metabolism

The pulp and juice of the passion fruit are rich in vitamin C and several other important minerals, such as potassium, iron and magnesium. Vitamin C is a fantastic mineral and antioxidant which aids in the absorption of other minerals such as iron. Passionfruit has a higher antioxidant activity than other tropical fruits such as mango, pineapple, banana and litchi. Foods with high antioxidant levels are important to prevent and negate the effects of oxidative stress. Oxidative stress is seen in metabolic disorders, including obesity, and this leads to problems with metabolism and inflammation. Oxidative stress causes build-up of reactive oxygen species known as free radicals which cause fatigue and muscle/joint pain.² With 50% of the recommended daily Vitamin C index, passionfruit is a great way to improve antioxidant levels and as a consequence may be useful in weight loss.

Glycemic index and blood sugar control

Passionfruit has a low glycemic index, which means it slowly releases sugars into the body when it is broken down. This is advantageous for diabetics as eating passion fruit will not cause a spike in blood sugar. Eating a diet full of low-GI foods has been shown to help with weight loss by reducing hunger and cravings between meals.

Hydration and detoxification

Passionfruit also has a dense water concentration which is excellent for hydration and removing toxins from the body.

Scientific evidence and practical considerations

Scientific research on rodents has shown that passion fruit lowers body fat and improves metabolism. Currently, there is limited clinical studies in humans to support the notion that high fibre content in passionfruit aids weight loss by making the person feel full for longer. Despite this, diets with high fruit and vegetable content have been shown to lower body weights.

Although currently there are not enough studies on the direct link between passionfruit and weight loss, there are clear benefits of eating passionfruit due its excellent nutritional profile.

Nutritionists and dieticians advocate for a varied diet incorporating all food groups and eating sufficient amounts of fruit and vegetables a day. As per these recommendations, incorporating passionfruit is a great adjuct to a balanced diet. With its high antioxidant and fibre content, passion fruit is useful in helping manage body weight and digestion.

Summary

• Passionfruit has a great nutritional profile and can aid weight loss alongside a balanced diet
• It is a low-calorie fruit with a high amount of fibre which promotes the feeling of fullness and healthy digestion
• Passionfruits antioxidant activity may improve metabolism and weight management
• There is a need for more research closely examine the relationship between consuming passionfruit and weight loss