Erikemanuelli commented on the following stories on BizSugar
I think you can expect that 1-3% of your total word count should be dedicated to your target keywords if you want to see any positive results ( up to 2-5% keyword density is considered safe by most). Using related terms can help you use variants of your target keyword. About your question: I think it's safe if the content sounds natural. If you focus on users, then you won't have any issues."