Where the present analyses departs from most prior cross-sectional work is by making use of long-term trajectories of measured body weight [11, 17,18,19,20,21]. Higher residential, population, and intersection densities were associated with lower weight gain over 5 years. Likewise, higher supermarket and fast food counts were also associated with marginally lower weight gain over 5 years. Based on the present analyses, differences in mean weight gain between the highest and lowest groupings of BE variables (densities and counts) were less than 0.5 kg between baseline and year 1, 3, and 5. Nevertheless, even if the impact of the BE on 5-year weight gain seems small, these differences could potentially translate into larger cumulative weight gain over the entire life course. Please explain in simpler terms