You will hear mixed stories on this as everyone seems to respond differently. Personally, I put on around 5kg. Whilst I could blame the steroids, I think it was more likely due to my anything goes approach to food. There was one day that I ate 4 x golden gaytimes! I used food to comfort me when I was feeling otherwise revolting, ice cream in particular was light relief. I finished chemo 3 months ago, I'm still on herceptin for another 6 months and also taking tamoxifen. I can officially report that I lost the 5kg gained during chemo easily once I put my mind to it. I do lots of exercise and am eating sensibly again. Good luck with everything, just do what feels right for you.