Each Christmas, headlines warn of significant weight gain, but the reality is less dramatic. While the British Dietetic Association claims the average person consumes 6,000 kcal on Christmas Day, such figures are often inflated by diet companies and media seeking attention. Scientific studies consistently show lower actual weight gain.
Research summarised by a nutritional science graduate indicates that festive weight gain is modest, typically less than 1 kg. However, a study in the journal 'American Society for Nutrition' found that adults weighed more in February and March than the previous autumn, with little change by the following September, suggesting Christmas weight is hard to shift.
The same study notes that US adults now weigh 8.6 kg more than in 1970, attributing much of this to holiday periods. To return to 1970s levels, adults would need to cut 500 kcal daily or increase physical activity. While Christmas weight gain is smaller than feared, its persistence makes caution worthwhile.
