Tipping the scales is a phrase used to describe when something has gone beyond a certain point or limit. In this case, it is used to describe when someone's weight has gone beyond what is considered healthy. The two crossword solutions for this phrase are 'OBESE' and 'FAT', both of which refer to an unhealthy level of body weight. OBESE is a 5-letter word meaning extremely overweight, while FAT is a 3-letter word meaning having too much body FAT.