Bodybuilder Marianne von Gierke Dies at 40 After Mr. Olympia: What Happens to the Body After Competition Prep?
Professional Chilean bodybuilder Marianne von Gierke has died at the age of 40, just two weeks after stepping off the stage at Mr. Olympia.
Chile's bodybuilding federation confirmed her passing on 14 October 2026, though authorities have not revealed an official cause of death.
The mother and trainer, who secured 13th place in the women's physique division, leaves behind an 11-year-old son and her partner of 10 years.
Sudden Loss Follows International Stage Appearance
Von Gierke turned professional in 2021, previously competing at the 2024 Olympia and capturing the Rising Phoenix World Championship title.
Her sudden passing stunned peers, especially after she shared social media updates celebrating a client's physical transformation just hours before her death.
Nutritionist Carolina Zamorano posted a tribute online, recalling their final backstage moments together. 'Still can't believe you're no longer with us,' Zamorano wrote. 'Your face was full of joy and pride; we talked about your second Olympia.'
Zamorano noted that the athlete had achieved major physical progress with less cardio, more food, and greater family balance.
Days earlier, von Gierke had praised her partner, Juan Cofre Garcia, thanking him for navigating 'every difficult stage of preparation' alongside her.
'He is with me 365 days a year, not only when things go well, but also through every difficult stage of preparation,' von Gierke said. 'To understand this passion, live it with me and vibrate with every challenge as if it were yours too.'
What Happens to the Body After Competition Prep?
Officials have not linked her death to bodybuilding, but the tragedy has renewed focus on the sport's severe physical demands.
A 2023 systematic review co-authored by researcher Brad Schoenfeld examined 11 case studies involving 15 physique athletes. It found changes in hormonal levels, physical performance and other physiological measures during contest preparation, with considerable variation between individuals.
Contest preparation typically involves calorie restriction, resistance training and aerobic exercise to reduce body fat while maintaining muscle mass. The physiological effects can vary depending on the athlete and the preparation programme.
Research has documented changes in thyroid hormones, testosterone, oestrogen and cortisol during contest preparation, although the direction and extent of these changes vary between athletes.
Low energy availability can disrupt menstrual function in female athletes. Contest preparation may also affect sleep and other aspects of physical well-being, but the effects vary between individuals.
Critical Bodybuilding Post-Show Phase
Sports scientists emphasise that stage leanness is biologically unsustainable, leaving the body severely depleted once competition ends.
An eight-month case series involving four drug-free bodybuilders found that average body weight fell by 8.6 kilograms during contest preparation, while peak power output also declined. Both measures changed during the two-month post-competition recovery period.
Post-competition recovery often involves increasing energy intake and regaining weight. However, research has not established a universal weight-gain target or timetable that guarantees hormonal, menstrual and metabolic recovery.
In the eight-month case series, average body weight and peak power output increased during the two months after competition, while resting metabolic rate decreased. The findings show that different physiological measures can follow different recovery patterns.
The findings underscore the importance of allowing time for recovery rather than assuming athletes can safely maintain competition-level leanness year-round.