Healthy weight Watch your weight Weighing too much or too little can increase your risk of developing a range of health conditions. Measuring your weight Eat the right foods and do the right amount of exercise to have and maintain a healthy weight. How to reach and keep a healthy weight Diet and exercise tips to start you on your journey to reaching a healthy weight. Being underweight If your BMI is below 18.5, this suggests that your weight may be too low. Additional support and advice Find support and resources to help you make changes to your weight. Talk with one of our advisors today to get free specialist advice and information Get in touch