Dear Devendra Raj Singh,

As a first start you may use Pubmed and search for all articles that have the words 'sleep' and 'BMI in their title:

https://www.ncbi.nlm.nih.gov/pubmed/?term=sleep%5Bti%5D+AND+BMI%5Bti%5D

If you replace BMI by adiposity you get even some more relevant results:

https://www.ncbi.nlm.nih.gov/pubmed/?term=sleep%5Bti%5D+AND+adiposi*%5Bti%5D

Hope that helps a little.

Best regards,

Dirk

Thank you Dear Dirk Cysarz for your suggestion.

Please go through the following RG links.

Article Association between sleep pattern and body mass index among ...

Article Sleep Quality and Body Mass Index in College Students: The R...

Article Longer sleep is associated with lower BMI and favorable meta...

Dear Dr. Arvind Singh , Hassan Izzeddin Sarsak

Sadanand Pandey

In general they are correlated and you may find many publications as suggested by others, but be careful what sleep parameters you are talking about (sleep onset, sleep stages, sleep efficiency). In addition, it also depends on population and disease.

Researches have shown...

In young adults, this relationship between sleep and BMI is linear, where more sleep is associated with lower BMI. However, this relationship changes for the middle-aged where 7–8 hours of sleep is associated with the lowest BMI, and both short and long sleepers tend to have a higher BMI.