67 years old Kent Cheng (鄭則仕) appeared to lose weight and had grey hair at a promotion activity for I Bet Your Pardon (荷里活有個大老千) drama on 20th February 2019. On the following day, a news source reported that he suffered from diabetes in recent years and needed to restrict his diet. Thus, Kent begun to have light meals and go for exercising and play bowling as well. However during an interview, he explained he was required to lose weight because of shooting series and remained healthy until now.

Source: https://ol.mingpao.com/ldy/showbiz/latest/20190221/1550736584530/%E3%80%90%E8%BA%AB%E5%BD%A2%E6%B6%88%E7%98%A6%E3%80%91%E5%8F%97%E7%B3%96%E5%B0%BF%E7%97%85%E5%9B%B0%E6%93%BE-%E9%84%AD%E5%89%87%E4%BB%95%E7%A8%B1%E4%B8%80%E5%88%87%E6%AD%A3%E5%B8%B8