How early in life does a strong desire for sweet taste in food start?

What might cause the desire for sweetness in children to become overwhelming ?

https://www.news-medical.net/news/2...lbeing-in-curbing-teens-sweet-tooth.aspx

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At the same time, more impulsive individuals may be more likely to consume unhealthy foods when they are stressed or upset. Thus, emotion-driven impulsiveness could mediate the relationship between emotional well-being and food-related decision-making. While these relationships have been explored using correlational studies, previous research could not establish a causal impact.

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