Advertisement

How is it possible to gain a lot of weight overnight?

Suddenly gaining more than 4 to 5 pounds of weight overnight may be a sign of a serious condition that should be addressed by a medical professional.  Generally, overnight weight gain is usually caused from fluid retention.  Consuming foods that are high in sodium (such as salt) can cause the body to hold on to water. 

It's not possible to gain a lot of weight over the course of one night. However, your weight may vary by a few pounds from day to day or even within the same day. This doesn't necessarily mean you're any fatter or leaner.

The truth is that daily fluctuations on the scale are completely normal. Body weight will shift a bit depending on the status of your body's fluids and solids (e.g., how much food and water you've consumed, bowel movements, urination, and sweat rate).

Try not to get too fixated on your daily weight. And when you do weigh yourself, try to make sure you do so under similar conditions each time (e.g., time of day, before exercise, before meals).
Dr. Mehmet Oz, MD
Cardiology (Cardiovascular Disease)
Gaining a lot weight overnight is possible, but it is most likely not fat gained. In this video, Dr. Oz explains what can cause a sudden jump in the scale.



Continue Learning about Exercise For Weight Loss

Ways to Lose Weight While Strength Straining
Ways to Lose Weight While Strength Straining
In May 2018, 27-year-old Icelander, Hafthor Julius Bjornsson, renowned for his role as “The Mountain,” Gregor Clegane, in Game of Thrones, won the Wor...
Read More
Will I burn fat faster if I train above my target heart rate?
Mark Dickey , NASM Elite TrainerMark Dickey , NASM Elite Trainer
Yes you can lose fat faster by training above your target heart rate, but you need to be careful not...
More Answers
5 Exercise Hacks to Jumpstart Your Weight Loss
5 Exercise Hacks to Jumpstart Your Weight Loss5 Exercise Hacks to Jumpstart Your Weight Loss5 Exercise Hacks to Jumpstart Your Weight Loss5 Exercise Hacks to Jumpstart Your Weight Loss
Trainer Donovan Green shares his secrets for calorie-burning success.
Start Slideshow
4 Smart Ways to Enjoy TV and Still Lose Weight
4 Smart Ways to Enjoy TV and Still Lose Weight

Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.