Manchester is Britain's "most toxic city" in the battle against obesity with the highest number of fast-food outlets per population, according to a survey.
A study by Weight Watchers found the city has a takeaway, cafe or coffee shop for every 492 people - 25% more than Bristol (623), the second highest conurbation for high street eateries.
The slimming group labels such ready availability of food as "food porn".
Edinburgh polled third in the table with an outlet for every 725 people, with Brighton fourth (768), London fifth (830) and Glasgow sixth (923).
Launching its New Approach campaign, Weight Watchers is making members more aware of their environment, and food and drink habits.
Zoe Hellman, head of public health at Weight Watchers, said: "New Approach Weight Watchers is helping members tackle their toxic environments head-on as members are encouraged to take control of their spaces and make better eating decisions.
"This isn't about demonising 'bad food', it's about being more aware of the choices we make each and every day so that we can begin to make better, healthier choices for our future health."