Humans prefer sweet things. It was important for our ancestors to have sweet foods.

In the modern world, sweetened foods are plentiful and inexpensive. We're consuming too much sugar in food and drinks because it's added instead of sugar that's naturally occurring.

It's bad news if you consume too much sugar. It is linked to a number of health problems.

Non-nutritive sweeteners were used to make food taste better. Both artificial and natural sweeteners can be found in these sweeteners and they contain little to no kilojoules.

The amount of added sugars and non-nutritive sweeteners in packaged foods and drinks has grown a lot over the last decade.

From lollies to biscuits to drinks

We looked at the amount of added sugar and non-nutritive sweeteners sold in packaged foods and drinks over the course of a decade.

The volume of non-nutritive sweeteners in drinks is increasing. The added sugars in food are higher.

Confectionery with non-nutritive sweeteners is more likely to be eaten. Sweet biscuits and ice cream are the fastest-growing food categories. Our packaged food supply is getting sweeter due to the increasing use of added sugars and other sweeteners.

The amount of sugar added to drinks has gone up around the world. China and India have seen a 50 percent increase in middle income. There has been a decrease in use in high-income countries.

Women should have less than six cups of sugar a day while men should have less than nine. Over half of Australians eat more than the recommended amount of sugar per day.

In soft drinks and bottled water, the use of added sugar is usually replaced with a sweeter substance. Guidelines are being developed by the World Health Organization on the use of non- sugar sweeteners.

Rich and poor countries

Rich and poor countries use different types of sugar and sweetener. In high income countries, the market for packaged food and beverages has become saturated. Large food and beverage corporations are branching out into middle-income countries.

Our findings show that there is a double standard in the way the food supply is sweetened.

Unexpected consequences of control

Many governments have taken steps to curb the use and consumption of sugar. Measures that include sugar levies, education campaigns, advertising restrictions, and labeling are included.

Such actions can encourage manufacturers to substitute sugar with non-nutritive sweeteners in order to avoid penalties.

We found that regions with a higher number of policy actions to reduce sugar intakes had a higher increase in the sale of non-nutritive sweeteners.

Why is this a problem

The harms of consuming too much added sugar are well known, but using non-nutritive sweeteners as a solution carries risk. Recent reviews suggest that consuming non-nutritive sweeteners may be linked with type 2 diabetes and heart disease.

Because they are sweet, we want more sweet food. The concern for children is that they are still developing their lifelong tastes.

Non-nutritive sweeteners are not removed from wastewater.

Ultra-processed foods contain non-nutritive sweeteners. These foods are designed to be "hyper-palatable" because they contain ingredients you wouldn't find in a home kitchen. More heart disease, type 2 diabetes, cancer, and death are caused by eating more ultra-processed foods.

Ultra-processed foods use a lot of resources and are harmful to the environment.

A health halo can be given to foods that don't contain sugar if they don't contain any.

Focus on nutrition

Unintended consequences should be considered when making policy to improve nutrition. Policy that considers the broader aspects of food, such as cultural importance, level of processing, and environmental impacts, is merited. Policy that promotes minimally processed food should be promoted.

The use of added sugars and non-nutritive sweeteners is on the rise. Future tastes, food choices, and human and planetary health are likely to be shaped by it.

Mark Lawrence, Professor of Public Health Nutrition, Institute for Physical Activity and Nutrition, and Phillip Baker are research fellows.

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