What is the best data type for age?

In the realm of cryptocurrency and finance, when dealing with data such as customer age, it's crucial to consider the most suitable data type. So, what is the best data type for age? Should we use integers, as age is typically represented by whole numbers? Or perhaps, under certain circumstances, could a float be more appropriate, given the rare possibility of dealing with fractions of a year? Furthermore, do we need to account for data validation, ensuring that age values are realistic and within a reasonable range? Ultimately, the choice of data type depends on the specific use case and the need for precision and accuracy in your cryptocurrency or finance application.