Could weight gain affect copd?

Yes. Obesity has bad effects on the lungs. An obese person scores lower on lung tests looking at: the amount of air one can blow out in one second (measures how much obstruction to airflow one has), the total amount of air one can blow out in one breath (measures how much air one can exchange with one breath), and the total amount of air one's lungs can fill up with (measures the "size" of the lungs).
Yes. Too much weight on the lung can cause breathing difficulty and affect lung function. Add that to copd, and it can make breathing more difficult.

Related Questions

Why do people with COPD tend to have fluctuating weight gain and fluid retention?

Steroids. Patients with COPD do not normally do that unless they are on and off steroids, pills or injections. Read more...
Heart strain. COPD can put a lot of strain on your heart , causing heart failure. When you have heart failure, you retain fluid. Read more...
See below. In patients with copd, the right heart is strained because it has to pump blood into the damaged lungs. When the right heart cannot pump the blood properly, that causes fluid back-up/retention which in turn causes weight gain. Read more...

184/ 86 BP COPD/night sweats/petechia on upper body and weight gain/left collarboan swelling with a small palpable lymoh node on top of collarbob e?

Lump on collar bone. 47 F from US with COPD and HTN 184/ weight gain but does not ask any question or give medical Hx. I would show to your Dr. next visit. Any edema? What meds are u taking? Trust you have stopped smoking. If not stop tonight. Read more...