Yes, I think individual needs, like age, gender, activity level or even cultural background, can affect what kind of diet is considered balanced. That’s why it's important to listen to your body and maybe even get help from a nutritionist.
I also think mental and emotional needs influence diet. Some people may eat less during stress, while others crave comfort foods. A balanced diet should support not just physical, but emotional health too, which can be very individual.
The idea of a balanced diet has to be flexible and personalized. Someone training for a marathon would need a lot more energy and protein than someone with a sedentary lifestyle if I can give an example..