Hi.. I would like to know a bit more information like your fat percentage...Diet pattern...workout plan...your lifestyle..etc.. Kindly get back to us with information needed as we need to analyse the pattern and suggest changes if necessary to improve your lean mass... We would also like you to rule out any hormonal issues that runs in your family and latest reports of your thyroid profile...lipid profile etc...based on these things a diet plan can be made tailor made to you to address your concern.. Hope this is helpful for you.. Revert back with the needed information we will help you...