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Tuesday, 2 Adar II, 5784
  |  March 12, 2024

Calories a Day, According to Torah

Rabbi Nachman Wilhelm of Online Smicha discusses how much should men and women eat a day, according to Torah and Halacha. Video

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43.5 beitzim
May 22, 2014 8:30 pm

If a beitza is two kzeysim, and a kezayis is one ounce, then 43.5 beitzim is 87 ounces. Bread typically runs ~80 calories per ounce, that would work out to 6960 calories per day, which almost nobody needs, maybe a very large lumberjack or something. Whoever knows that a kezayis is supposed to equal an olive, but also that we hold it is one ounce, reconciles the discrepancy by the presumption that olives were much bigger in Biblical times. #2 is closer, but those 66 calorie eggs are not the ones most of us eat, those are the “medium” eggs,… Read more »

To #3
May 22, 2014 8:03 am

I guess we can answer the Almighty has over the years proportionately kept a balance of calories, meaning, if man was bigger during the times of Tannain/Amoroim then the egg was bigger ( like the fruits during the times of the meraglim) but the math remains always the same I.e., 43.5.

2,871 calories?
May 21, 2014 11:15 pm

Yum. Pass the chocolate cake. But why do you think that our eggs are the same size, or have the same calories as those in the days of the gemorrah?
Really, this was quite interesting.

Calories per egg
May 21, 2014 5:18 pm

According to the shiur. *One egg (raw) contains 66 calories
So 43.5 (eggs) X 66 calories = 2,871 calories which sounds about right.

*calories count data base

interesting
May 21, 2014 4:58 pm

but can you go into more depth? What is that shiur equivalent too? Also there other places in gemara, rambam and shulchan aruch that discuss how much to eat and what to eat.. pas shachris etc. and how much of it applies today. meaning is the Rambams way of eating the way to go or perhaps there are new sciences that we should adhere to under the mitzva of “ushmartem es nafshoichem”

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