How do I know how much I should eat to lose or maintain weight?

Research has shown that maintaining a healthy weight has been shown to improve survival in women with breast cancer and reduces the risk of recurrent breast cancer and secondary cancers.

To manage your weight it is important to follow a healthy eating pattern that meets your energy requirements. Energy requirements vary depending on age, gender, body size, activity levels, as well as pregnancy and breast-feeding. It is important to balance the energy taken in (from food and drink) with the energy being expended through physical activity and the body’s normal functioning, to maintain a healthy weight.

Weight gain will occur when energy, or kilojoule intake, is greater than the energy expended during the combination of routine day-to-day activities and physical activity.