Modern Diets Linked to Tooth Loss Concerns

August 5, 2025

Dentists are expressing growing concern about the increased prevalence of people not developing some teeth, particularly wisdom teeth, due to evolutionary changes influenced by modern diets which don't require as many teeth or strong chewing forces when compared to traditional foods.

Today, almost half of Australian children's energy intake is made up of ultra-processed foods, with research from the CSIRO suggesting ultra-processed food consumption in Australia will increase by 20 per cent over the next 5 years

Bupa Dental Principal Dentist Dr Mark Dohlad said modern diets, rich in soft, processed foods and lacking chewy and tough foods, may be contributing to smaller jaws and potentially affecting tooth development. Additionally, a lack of essential nutrients in a child's diet can hinder proper tooth development, including the timing of baby teeth loss and the eruption of adult teeth.

"Over recent times, our dentists are seeing more missing or undeveloped teeth amongst children and adults with gum disease which can lead to tooth loss.

"While a solid oral health routine that includes twice daily brushing, flossing and regular dental visits are essential to maintaining a healthy smile, people also need to prioritise a healthy diet that includes proteins and vegetables that require actual chewing," Dr Dohlad said.

CSIRO data suggests that by 2030, our diets will comprise almost 10 per cent less fruit, and around 18 per cent more junk food, with separate Bupa research suggesting Aussies believe nutrition is less than half as impactful as fitness when it comes to maintaining optimal health and wellbeing.

"Your oral health is closely linked to your general wellbeing, with gum disease, infections and untreated cavities being linked to heart disease, dementia and even depression in the case of people who don't feel comfortable smiling which shows their teeth.

"The important thing to remember is not to revamp your diet and oral health routine on your own. Speak to your friendly local dentists about the best steps you can take that suit your lifestyle and unique health requirements. A few simple tweaks can make all the difference.

To help with cost-of living concerns, eligible Bupa Health Insurance customers get 100% back on check-ups and simple dental fillings when visiting Bupa Members First Ultimate practices.

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