How much did each Holocaust survivor weigh at the time of liberation?

Every Holocaust survivor seems to know exactly how much he or she weighed when they were liberated.  I got to thinking about this today when I read about yet another Auschwitz survivor who mentioned how much he weighed when he was liberated.  (Average weight for the survivors was around 60 pounds.)

Did the liberators bring scales with them, so that each person could weigh himself?  No, but they did bring cameras with them and the liberation photos show that many of the prisoners were in good health; for example, the women in the photo below, taken at Auschwitz-Birkenau.  (Why wasn’t the old woman sent to the gas chamber immediately upon arrival?)  Notice the nice clothes worn by the young girl in the photo.

Survivors of Auschwitz-Birkenau

Photos taken on the day of liberation, at all the camps, show that not all prisoners in the concentration camps were skin and bones, even after many years in the camp.

The photo below was taken on the day that one of the sub-camps of Dachau was liberated by soldiers in the 45th Division of the American Army.

Russian POWs in a Dachau sub-camp

Notice that the American Army officer on the left looks slimmer than the Russian POWs.

There are many photos of skinny Russian POWs who were allegedly starved at Mauthausen, as shown in the photo below.

Russian POWs at Mauthausen

When I visited the Mauthausen Memorial Site, I saw a scale model of the quarry there, which is shown in the photo below.

Scale model of Mauthausen quarry

On the right, at the top of the photo above, you can see the barracks for the sick inmates at Mauthausen, also known as the “Russian camp” because this section of the camp was first used to house  Soviet POWs. This area is now a graveyard for the sick prisoners who died after the camp was liberated.

Were the men, in the old black and white photo, actually prisoners in the Mauthusen “sick camp”? Were they skin and bones because they were ill?  Or were they “Russian POWs” who had been deliberately starved?

It would be natural to assume that the Russian POWs were treated the worst in the Nazi camps because the Russians were treating German POWs very badly.  But the old photo taken in a Dachau sub-camp shows that at least some of the Russian POWs were treated very well.