Alistair Overeem has long been an iconic figure in the combat sports world but fans are beginning to show their concerns for the man's health after a shocking photograph surfaced. Often referred to as 'Ubereem', the masterful striker was considered to have the best physique in the sport in his heyday, though that has since changed.While many believe his true talents faded once USADA was implemented into the UFC, he had a much better record following the anti-doping program's inclusion. Despite losing in his final bout and leaving the octagon for pastures new, the Dutchman was still a feared competitor who had won four of his last six outings.'The Demolition Man' is a staple of the combat sports game and has succeeded almost everywhere he has competed. But concerns were raised when a recent picture showcasing his new physique appeared online.Spinnin Backfist@SpinninBackfistSKINNY OVERREEM?????158734SKINNY OVERREEM????? https://t.co/SJRTtPFU7LUnderstandably so, this caused fans on social media to lose their minds and question what was wrong with the former UFC title challenger. Some were worried about his health.Image credit: @rchrdchmbrs on TwitterImage credit: @burner_khamzat on TwitterImage credit: @thisboijesse on TwitterImage credit: @LossyP on TwitterImage credit: @Nincs_Arcom on TwitterImage credit: @BlackndDynamite on TwitterImage credit: @elcucuy405 on TwitterImage credit: @kyle_inacio on TwitterImage credit: @rockstarnoguitr on TwitterImage credit: @papalechaco on TwitterOthers took the opportunity to make jokes about Alistair Overeem or suggest it may be a weight class switch late into his career.Image credit: @CaptainThew on TwitterImage credit: @Wwaleeed5 on TwitterImage credit: @JTideV5 on TwitterImage credit: @CharlesTurrall on TwitterAlistair Overeem UFC: How did the star fare inside the octagon?Throughout his years under the UFC banner, Alistair Overeem managed to put together a record of 12-8, competing against some of the heavyweight greats of his time.The now-43-year-old began his career in the promotion with a huge TKO victory over the legendary Brock Lesnar, but things went downhill for him in his next outings. His next four octagon appearances saw him lose to Antonio 'Bigfoot' Silva, Travis Browne, and Ben Rothwell, with his sole win in that time coming against Frank Mir.Alistair Overeem would then go on a four-fight win streak before being given a shot at UFC gold. Although he came up short against Stipe Miocic, the icon would win six of his next 10 fights and remains the last person to ever defeat surging heavyweight powerhouse Sergei Pavlovich.ARENA@MMArena_Ce ground and pound d'une rare violence d'Overeem contre Pavlovich 🥶42037Ce ground and pound d'une rare violence d'Overeem contre Pavlovich 💥🥶https://t.co/zTmGOTEdon