Does asthma affect my body weight? or is it impossible for asthma patients to gain weight? if possible, what would be a recommended diet for us?

Steroids: Asthma itself will not make you gain weight, but frequent exacerbations that lead to the use of oral steroids will, as oral steroids make you gain weight. Your best options are to see an athma specialist to control your asthma adequately and avoid the use of oral steroids as much as possible.

Yes: It can. Poorly controlled asthma can lead to weight loss and poor health in general. Patients with asthma do well with regular diet, but proper management of their asthma is also very important.