The average weight gain per year after 30 is 0.6 to 1.7 pounds. Aging, metabolic slowdown, bad eating and decreased physical activity all play.
OBJECTIVES: Adults tend to gain weight progressively through middle age. Although the average weight gain is 0.5 to 1 kg per year, this modest accumulation.
The researchers found that, on average, American adults gained to the extent of more than two pounds per year among adults over the age.