Objectives: is to assess the impact of dietary advice on malnourished patients with COPD.

Methods: an intervention study conducted at the chest hospital of Tanta university. One hundred patients with stable COPD were chosen.

Patients received dietary counseling once a week for 6 months based on specific nutritional guidelines for patients with COPD.

Results: After 6 months of the intervention, the mean difference of COPD assessment test (CAT) improved from (19.47± 5.759) preintervention to (12.98±5.635) postintervention, both had moderate respiratory impairment as measured by CAT score and the mean difference of Modified Research council (MRC) dyspnea scale improved from (2.70±.689) preintervention to (1.99±.772) postintervention, both had mild score on (MRC) dyspnea scale, with significant difference p (<0.001). Health-related quality of life (HRQOL) increased from 4% preintervention to 30% postintervention with significant difference. p= (0.002).

Subjective Global Assessment scores (SGA) improved where there was enhancement and shift in malnutrition from 77% (52%SGA B, 25%SGA C), to only 55% (43% SGA B, 12% SGA C). (p <0.001).

Conclusion: Dietary counseling has a great impact on malnourished COPD patients. It improves nutritional status, resulting in increased functional lung capacity and, as a result, HRQOL.