Stone, Rebecca A;    Christiansen, Paul;    Johnstone, Alexandra M;    Brown, Adrian;    Douglas, Flora;    Hardman, Charlotte A;      (2025)    Understanding the barriers to purchasing healthier, more environmentally sustainable food for people living with obesity and varying experiences of food insecurity in the UK.                   Food Policy , 131     , Article 102798.  10.1016/j.foodpol.2025.102798 <https://doi.org/10.1016/j.foodpol.2025.102798>.    (In press).    Green open access