Slimming businesses provide products and services intended to support weight management and changes to eating or activity habits. They may offer individual consultations, group meetings, structured weight-loss programmes, progress monitoring and guidance on setting realistic goals. Advice can cover food choices, portion sizes, meal planning and physical activity, with the approach varying between providers. Products may include meal-replacement shakes, bars, prepared foods, recipe plans, books and dietary supplements. Some businesses focus on retail products, while others provide ongoing coaching or a combination of services and products. Customers may be asked about their health, preferences and previous attempts at weight loss so that support can be adapted to their circumstances. Where weight concerns involve a medical condition, medication or significant changes in diet, appropriate clinical advice may be needed alongside or instead of a commercial slimming service.