Dollar General customers are buying groceries but skipping non-essentials as they rely on savings, credit cards, and borrowing money from friends to get by

• While more people are shopping for groceries at Dollar General, other categories are suffering.
• Sales of home products and seasonal items were more muted during the most recent quarter. 
• Analysts say adding more grocery items to stores can risk cannibalizing sales in other departments. 

More people are shopping for cheap groceries at Dollar General, but it's not necessarily a good thing.