People sometimes have rough times when their appearance may slip a bit, we even have a name for it - Bad hair days. Don't let the name fool you though, it doesn't always last a full day, nor is it always concluded in just a day. Sometimes people hit slumps and don't look their best. Its alright to show some concern. But it seems awful premature to suggest there may be any serious problem. I mean they ain't getting stoned and tumbling down a flight (or two) of stairs, risking potential broken necks or anything dangerous.
And to continue spreading unsupported rumors that they may be getting into serious drug use/abuse..... That is just uncalled for. Especially when the rumor is from cowardly blind items.... That is just sad.