Christmas is a time of celebration, family gatherings, and special meals. Many people enjoy large portions of traditional foods, sweets, and drinks that they do not usually eat during the rest of the year. While enjoying food is an important part of Christmas culture, eating too much over several days can affect our health.
Scientific research shows that many adults gain weight during the Christmas holidays. A study published in the New England Journal of Medicine found that people gain on average 0.5 to 1 kilogram during the holiday season, and this weight is often not lost afterward. Over time, these small yearly increases can add up and increase the risk of overweight and obesity.
Overeating during Christmas can also affect how the body controls sugar and fat. Research shows that eating large amounts of high-fat and high-sugar foods, even for a short period, can reduce insulin sensitivity, which makes it harder for the body to manage blood sugar levels. In healthy people, these changes are usually temporary, but for people with diabetes or pre-diabetes, they can be more serious.
In the short term, very large meals can cause digestive problems such as bloating, stomach pain, and heartburn. Eating late at night and drinking alcohol can make these symptoms worse. Some studies suggest that heavy meals may also increase stress on the heart, especially in people who already have heart disease or high blood pressure.
Physical activity is another important factor. During the holidays, many people exercise less and spend more time sitting. Research shows that overeating combined with low physical activity increases negative health effects. However, studies also show that staying active, even with light activities like walking, can reduce holiday weight gain and help protect metabolic health.
It is important to remember that enjoying Christmas food is normal and part of social life. Health problems usually appear when overeating happens often and physical activity is low. Simple habits—such as eating slowly, choosing smaller portions, staying active, and returning to normal routines after Christmas—can help protect health.
In conclusion, Christmas feasts are enjoyable and meaningful, but they can affect weight, digestion, and metabolism. Understanding these effects allows people to enjoy the holidays while also taking care of their health.
Editor of Daily 27.
Predoctoral researcher at the Department of Sociology in University of Barcelona.