Gaining or losing weight is influenced by a complex interplay of various factors, and a short-term weight fluctuation like the one you described can occur due to several reasons. Here are some potential explanations:
Water Retention: After a period of binge eating, your body may hold on to more water to help digest the excess food consumed. This can lead to temporary weight gain. Similarly, when you restrict your calorie intake significantly, your body might retain water as a survival response.
Glycogen Storage: Carbohydrates are stored in the body as glycogen, and each gram of glycogen is bound to water molecules. When you binge eat, your body stores more glycogen, and this, in turn, increases water retention.
Digestion and Waste: The food consumed during binge eating takes time to be processed and move through your digestive system. Consequently, it's possible that some of the extra weight comes from undigested food or waste in your system.
Metabolism Adjustment: Eating too few calories (such as 700 calories a day) for an extended period can slow down your metabolism as your body tries to conserve energy. This adaptation can lead to minimal calorie expenditure, making it easier to gain weight when you return to regular eating habits.
Inaccurate Measurements: Sometimes, weight fluctuations might be the result of imprecise measurements or using different scales. Factors like time of day, clothing worn, and hydration levels can all affect the numbers on the scale.
Hormonal Influences: Hormones can play a role in weight regulation, and certain hormones might be affected by binge eating or severe calorie restriction.
It's essential to remember that weight fluctuations are common and don't necessarily indicate fat gain or loss. Moreover, focusing on short-term changes can be counterproductive when it comes to your overall health and well-being. Sustainable weight management is better achieved through consistent, balanced eating habits, regular physical activity, and a healthy lifestyle.
If you have concerns about your eating habits, weight, or overall health, it's always best to consult with a healthcare professional or a registered dietitian who can provide personalized guidance and support.