A Partner's Poor Sleep Can Impact Your Diet, Study Finds

A partner's poor sleep can negatively affect an individual's diet, extending beyond personal sleep habits to influence eating choices and adherence to healthy goals, according to a study published in the Annals of Behavioural Medicine. This effect is attributed to couples often sharing meals, meaning one partner's unhealthy food decisions can ripple through to the other.

The study followed 204 couples in Canada, with an average age of 42, at the beginning of the research, after one month, and again after three months. At least one person in each participating couple was overweight or obese and actively trying to improve their diet or physical activity.

Researchers found that individuals who experienced poor sleep reported making less effort to maintain healthy eating habits. Importantly, partners of those who slept poorly also reported lower confidence and reduced effort in maintaining healthy diets, even if their own sleep quality was good.

While women in the study reported healthier diets and intentions than men, the gender of the participants did not alter the relationship between a partner's sleep and the other's diet-related behaviors.

Professor Jean-Philippe Gouin, the study's corresponding author and a psychologist at Concordia University in Montreal, emphasized the importance of considering the social context of eating behaviors. He suggested that couples need to work together to modify their home and food environments to support long-term healthy eating habits.