Crackers and cavities: why starchy snacks deserve more attention

Frequency is the main driver

Every time a child eats, the mouth becomes more acidic and then slowly recovers. A child who grazes on crackers through the afternoon keeps their teeth in that acidic phase far longer than a child who eats the same amount at one sitting.

Practical swaps

• Keep snacks to defined times rather than continuous grazing.
• Pair starchy foods with water, cheese, plain yoghurt or vegetables.
• Offer water — not juice or flavoured milk — between meals.
• Brush at night after the last food or drink of the day.

The honest summary

No single snack is uniquely responsible for cavities. Sticky, retentive, frequently eaten foods — sweet or starchy — matter most, together with how well teeth are brushed and whether fluoride is used.