Hi spero ,
I'm 63 and female. Like yourself I have always been fairly slim and physically active. ........walking , pilates , gardening etc .I'm not on the same inaler as you. However was diagnosed with copd 6 months ago following 2/3 years of chest infections and a chronic persistent cough ( day and night ). Lung function was 55%.....quite a shock as able to walk 5 miles on the flat with no shortness of breath.
I stopped smoking .( Had smoked for 48 years ) . Apparently a weight gain of 6-8 pounds is normal after a smoking quit and can be explained by metabolic changes. I don't understand all of the science but think its to do with nicotine being a stimulant and more energy being released ? Someone else may explain it better.
Prior to quitting I was probably 7lb underweight due to couhging , phlegm, and often not finishing meals. My initial weight gain was quite welcome. However it didn't stop there !! Have now gained about 20lb and most clothes don't fit.
Food now tastes so much better so probably having slightly larger portions and finishing meals. Also on top of a fairly healthy diet I am now snacking on sweets , chocolate fruit and cakes. Whilst still smoking would have cup of coffee and a cigarette now it's a food item.
Have never really had to watch my weight in the past but going to have to start ! Dont want to gain any more as this could affect breathing .Apparently metabolism also slows down as we get older so need to be eating less not more . Off on holiday soon so won't be starting new eating regime until after that. I personally don't think that inhalers cause weght gain as the ammout of steroids is very tiny and going to the lungs rather than the digestive system.
Someone on here said a while back that weight gain can be dealt with but lung damage can't be repaired ! (Thats a big incentive to keep off the cigarettes ! )
Sorry if I've waffled on but am just throwing around a few ideas .