Fetal growth rates - How many cells?

I tried to search the web for a table like this and couldn’t find anything.

How many cells does a human fetus have at different stages? How many cells at one hour from conception, at one day, at one week, at one month, two months, three months, and so on. How many cells in a newborn? How many cells in my adult body?

I doubt such a table exists, due to the wide variance in cell count estimates and the variance between one person and another. Even a single individual’s cell count changes from day to day.

If you want the counts for the first week or so, those are pretty reliable, but after that it’s educated guesswork. To give you an idea of why, the adult body is estimated to consist of between 10 trillion and 100 trillion cells. Not only is that a large number, but there is a 90 trillion cell difference between the two. Not very exacting.

According to the last time I stepped on the scale, I must be one of those hundred trillioners.

This site offers a good description .

One site I found says that division was

This site provides a timeline , but there is only a couple mentions of cellular divisions - apart from the obvious first split that begins the miracle…

I’m sure with enough Googling you could find the cell divisions you are looking for.

I agree with Neptune :smiley: