Offer your thoughts or opinion on the input financial query or topic using your financial background.

How do I explain why debt on debt is bad to my brother?
The key idea he should focus on is that every debt includes interest - the money he didn't borrow, but now owes. The interest goes straight to the lender pocket and the debtor has to get money somewhere for that interest. That's the key reason of why getting another loan only increases pressure on the debtor - with the new loan he owes new interest in addition to what he already owed.