# \[0.8.5\] Zoi lose all their weight and become super thin/skinny in a few days. **URL:** \ **Category:** Bug Reports\ **Tags:** npc, build, interaction\ **Created:** [May 18, 2026, 5:13pm UTC](https://forum.playinzoi.com/t/topic/12913 "2026-05-18T17:13:58Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![Samuriko](https://dub1.discourse-cdn.com/krafton/user_avatar/forum.playinzoi.com/samuriko/32/15564_2.png) [@Samuriko](https://forum.playinzoi.com/u/Samuriko)\ **Post date:** [May 18, 2026, 5:13pm UTC](https://forum.playinzoi.com/t/topic/12913/1 "2026-05-18T17:13:58Z")
> - > - **Game Version** : 20260514.12524.W > > - **Platform** : Steam Windows > > - **Mods** : > šŸ“Small Talk Fix > šŸ“Balanced Painting > šŸ“Bigger Households > šŸ“Precise Age Group Control > > - **Hardware Specifications & Operating System** (OS version, CPU, GPU, RAM, storageā€¦): > Windows 10 Professional / 22H2 / 19045.7184 > 13th Gen Intel(R) Core i9-13900KF 3.00 GHz > NVIDIA GeForce RTX 4070 Ti > 192 Gb Ram, 4TB NVmE with 2.2tb left. > > - **Steps to Reproduce:** > Make a family of chubby to Fat zoi (set fat 50%+ in body slider) > Play the game for a while. Regular playing, not even spending all day at the gym. > In a few days, all your Zois will end-up with the thinnest body frame (no fat). This has been a bug for a very, very long time nowā€¦ I presume itā€™s not getting complained a lot about is because we like looking at thin/fit people, I get it. However, this should really get fixed. Maybe not as bad as it was before the bug happened (where everyone became fat in a few days), but something in between? Heck maybe a ā€œCaloriesā€ slider in the town setting that influences how much effort it takes to remain thin. Putting this one all the way to the maximum would make it very hard. But even without going into the realm of suggestions, it needs to be fixed. Thank you for addressing ! ---
**Author:** ![JoyIsFunner](https://dub1.discourse-cdn.com/krafton/user_avatar/forum.playinzoi.com/joyisfunner/32/8276_2.png) [@JoyIsFunner](https://forum.playinzoi.com/u/JoyIsFunner)\ **Post date:** [May 18, 2026, 5:24pm UTC](https://forum.playinzoi.com/t/topic/12913/2 "2026-05-18T17:24:50Z")
Personally I wish body shapes would not change at all (I donā€™t want that realism) because every zoi I create needs the exact body shape I gave them to fit their vibe. ---
**Author:** ![Samuriko](https://dub1.discourse-cdn.com/krafton/user_avatar/forum.playinzoi.com/samuriko/32/15564_2.png) [@Samuriko](https://forum.playinzoi.com/u/Samuriko)\ **Post date:** [May 18, 2026, 5:38pm UTC](https://forum.playinzoi.com/t/topic/12913/3 "2026-05-18T17:38:34Z")
That you can easily do. Itā€™s in the options. Just turn it off šŸ˜‰ ā€œDynamic Physiqueā€ in Simulation ![image](https://europe1.discourse-cdn.com/krafton/original/2X/a/ac570b5db56cdcdce89ef5551636aa84b3d9790c.png) ---
**Author:** ![JoyIsFunner](https://dub1.discourse-cdn.com/krafton/user_avatar/forum.playinzoi.com/joyisfunner/32/8276_2.png) [@JoyIsFunner](https://forum.playinzoi.com/u/JoyIsFunner)\ **Post date:** [May 18, 2026, 9:02pm UTC](https://forum.playinzoi.com/t/topic/12913/4 "2026-05-18T21:02:00Z")
Ah thanks šŸ‘ ---
**Author:** ![Nyami](https://dub1.discourse-cdn.com/krafton/user_avatar/forum.playinzoi.com/nyami/32/13095_2.png) [@Nyami](https://forum.playinzoi.com/u/Nyami)\ **Post date:** [May 18, 2026, 11:25pm UTC](https://forum.playinzoi.com/t/topic/12913/5 "2026-05-18T23:25:20Z")
This bug is really, really bad and immersion breaking. I strongly agree that it must be fixed. I love the idea of sliders for low, medium and high calorie food that can be used in game. I actually have made a mod that tweaks the calories and it makes the weight system a lot better for all Zois or so it seems. This is my thread about it, which shows the values I edited in order to achieve a better, more balanced fitness system. > [@Weight gain and loss is currently unbalanced. Please implement these changes to the fitness system.](https://forum.playinzoi.com/t/topic/12466): > > The Fitness system NEEDS an overhaul. I propose that these values should be used in the gameā€™s official code instead of just mods so that weight is gained and lost more evenly. Calories Bound: 590 Max Delta Obesity: 15 For the Calorie Map: Keep zero calorie food as 0. Low calorie food should be 600 in value. Low calorie food should be 700 in value. Low calorie food should be 800 in value. For the Exercise Calorie Value Map. Keep zero exercise as 0. Easy exercise should be 50 in value. ā€¦ ---
**Author:** ![NIck\_Olay](https://dub1.discourse-cdn.com/krafton/user_avatar/forum.playinzoi.com/nick_olay/32/15800_2.png) [@NIck\_Olay](https://forum.playinzoi.com/u/NIck_Olay)\ **Post date:** [May 19, 2026, 11:06am UTC](https://forum.playinzoi.com/t/topic/12913/6 "2026-05-19T11:06:32Z")
Yes, weā€™ve talked about this before. This is really a mistake or a flaw on the part of the developers. In fact, itā€™s much easier to gain weight than not to change it. And now InZoi is completely absurd: itā€™s the other way around. ---
**Author:** ![lesliemoon](https://dub1.discourse-cdn.com/krafton/user_avatar/forum.playinzoi.com/lesliemoon/32/15127_2.png) [@lesliemoon](https://forum.playinzoi.com/u/lesliemoon)\ **Post date:** [June 18, 2026, 4:06am UTC](https://forum.playinzoi.com/t/topic/12913/7 "2026-06-18T04:06:26Z")
Iā€™m very irritated by this bug. My Sims are becoming excessively thin, losing weight every day, even though theyā€™re not exercising or on a diet. I have to use cheats for the character editor to restore their previous weight. ---
**Author:** ![Samuriko](https://dub1.discourse-cdn.com/krafton/user_avatar/forum.playinzoi.com/samuriko/32/15564_2.png) [@Samuriko](https://forum.playinzoi.com/u/Samuriko)\ **Post date:** [June 18, 2026, 4:52am UTC](https://forum.playinzoi.com/t/topic/12913/8 "2026-06-18T04:52:12Z")
Does not seem to be fixed in the Early 0.9.0 build. But weā€™ll know when the live version comes around in 1 hour. ---
**Author:** ![GoldenBuffy](https://dub1.discourse-cdn.com/krafton/user_avatar/forum.playinzoi.com/goldenbuffy/32/2735_2.png) [@GoldenBuffy](https://forum.playinzoi.com/u/GoldenBuffy)\ **Post date:** [June 23, 2026, 7:49pm UTC](https://forum.playinzoi.com/t/topic/12913/9 "2026-06-23T19:49:45Z")
Is it just in my game? But Iā€™ve noticed that zois Iā€™ve made on the heavier side have all slimmed down without working out. ---
**Author:** ![Moooody](https://dub1.discourse-cdn.com/krafton/user_avatar/forum.playinzoi.com/moooody/32/17619_2.png) [@Moooody](https://forum.playinzoi.com/u/Moooody)\ **Post date:** [June 23, 2026, 9:19pm UTC](https://forum.playinzoi.com/t/topic/12913/10 "2026-06-23T21:19:56Z")
Itā€™s definitely not in your game only. Itā€™s a bug that has been around for a while. Since youā€™re experiencing it, please go to [the original bug post](https://forum.playinzoi.com/t/topic/12913/5) and make a comment. Engagement helps devs see our posts and add the issues that get reported to the known list to work on them properly. Hopefully we get this one fixed soon! ---
**Author:** ![Recto.M](https://dub1.discourse-cdn.com/krafton/user_avatar/forum.playinzoi.com/recto.m/32/4203_2.png) [@Recto.M](https://forum.playinzoi.com/u/Recto.M)\ **Post date:** [June 23, 2026, 9:22pm UTC](https://forum.playinzoi.com/t/topic/12913/11 "2026-06-23T21:22:53Z")
I will merge your post into the existing thread so that we can track and discuss this issue in a single thread. šŸ˜‡ ---
**Author:** ![Nyami](https://dub1.discourse-cdn.com/krafton/user_avatar/forum.playinzoi.com/nyami/32/13095_2.png) [@Nyami](https://forum.playinzoi.com/u/Nyami)\ **Post date:** [June 23, 2026, 9:55pm UTC](https://forum.playinzoi.com/t/topic/12913/12 "2026-06-23T21:55:51Z")
Just thought Iā€™d mention again, I believe that the weight system is simply **unbalanced** as my mod I posted above fixes the issue. ---
**Author:** ![Samuriko](https://dub1.discourse-cdn.com/krafton/user_avatar/forum.playinzoi.com/samuriko/32/15564_2.png) [@Samuriko](https://forum.playinzoi.com/u/Samuriko)\ **Post date:** [June 23, 2026, 10:18pm UTC](https://forum.playinzoi.com/t/topic/12913/13 "2026-06-23T22:18:08Z")
Hopefully they fix it for the un-modded version too ! ( And the sooner the better, this bug is closing-in in at 1 years old soon ! ) ---
**Author:** ![Nyami](https://dub1.discourse-cdn.com/krafton/user_avatar/forum.playinzoi.com/nyami/32/13095_2.png) [@Nyami](https://forum.playinzoi.com/u/Nyami)\ **Post date:** [June 23, 2026, 11:31pm UTC](https://forum.playinzoi.com/t/topic/12913/14 "2026-06-23T23:31:32Z")
This is why I wish the devs would peek into my mod to get a general idea of the fix. My mod probably isnā€™t perfectly tuned but itā€™s better than the current vanilla. ---
**Author:** ![GoldenBuffy](https://dub1.discourse-cdn.com/krafton/user_avatar/forum.playinzoi.com/goldenbuffy/32/2735_2.png) [@GoldenBuffy](https://forum.playinzoi.com/u/GoldenBuffy)\ **Post date:** [June 24, 2026, 3:04am UTC](https://forum.playinzoi.com/t/topic/12913/15 "2026-06-24T03:04:01Z")
Thank you! ---
**Author:** ![GoldenBuffy](https://dub1.discourse-cdn.com/krafton/user_avatar/forum.playinzoi.com/goldenbuffy/32/2735_2.png) [@GoldenBuffy](https://forum.playinzoi.com/u/GoldenBuffy)\ **Post date:** [June 24, 2026, 3:07am UTC](https://forum.playinzoi.com/t/topic/12913/16 "2026-06-24T03:07:07Z")
Thank you! I had no idea it was an ongoing issue. ---
**Author:** ![Samuriko](https://dub1.discourse-cdn.com/krafton/user_avatar/forum.playinzoi.com/samuriko/32/15564_2.png) [@Samuriko](https://forum.playinzoi.com/u/Samuriko)\ **Post date:** [June 24, 2026, 5:46am UTC](https://forum.playinzoi.com/t/topic/12913/17 "2026-06-24T05:46:21Z")
Most ppl do not care about this one as they want their Zois to remain thin.šŸ˜† But yeah, itā€™s been going on for a very long time. Since last August or September. šŸ˜µā€šŸ’« ---
**Author:** ![Moooody](https://dub1.discourse-cdn.com/krafton/user_avatar/forum.playinzoi.com/moooody/32/17619_2.png) [@Moooody](https://forum.playinzoi.com/u/Moooody)\ **Post date:** [June 24, 2026, 4:03pm UTC](https://forum.playinzoi.com/t/topic/12913/18 "2026-06-24T16:03:41Z")
Maybe you can post your mod link here? So that the devs can take a look if they are peaking. ---
**Author:** ![GoldenBuffy](https://dub1.discourse-cdn.com/krafton/user_avatar/forum.playinzoi.com/goldenbuffy/32/2735_2.png) [@GoldenBuffy](https://forum.playinzoi.com/u/GoldenBuffy)\ **Post date:** [June 24, 2026, 5:09pm UTC](https://forum.playinzoi.com/t/topic/12913/19 "2026-06-24T17:09:25Z")
I wouldnā€™t say ā€œmostā€ because thatā€™s being subjective as a whole, and we all like to play in our own ways. By fixing the weight gain/loss bug it only adds more depth to the life sim. šŸ˜†For variety and versatility, I hope they do fix it. ---
**Author:** ![Nyami](https://dub1.discourse-cdn.com/krafton/user_avatar/forum.playinzoi.com/nyami/32/13095_2.png) [@Nyami](https://forum.playinzoi.com/u/Nyami)\ **Post date:** [June 24, 2026, 10:02pm UTC](https://forum.playinzoi.com/t/topic/12913/20 "2026-06-24T22:02:43Z")
Good idea. Here it is: [https://www.curseforge.com/inzoi/mods/balancedweight-ffe85c4d](https://www.curseforge.com/inzoi/mods/balancedweight-ffe85c4d) And this is precisely what I did in the mod, to quote my other thread: Calories Bound: 590 Max Delta Obesity: 15 For the Calorie Map: Keep zero calorie food as 0. Low calorie food should be 600 in value. Low calorie food should be 700 in value. Low calorie food should be 800 in value. For the Exercise Calorie Value Map. Keep zero exercise as 0. Easy exercise should be 50 in value. Moderate exercise should be 450 in value. Hard exercise should be 655 in value. Intense exercise should be 750 in value. Extreme exercise should be 900 in value. Maximal exercise should be 1100 in value. [Next page](https://forum.playinzoi.com/t/topic/12913.md?page=2)