Yes and no. For everyone other than Adam, nothing changed except the addition of the soul. Adam himself was constructed, not born. Constructed as a perfect specimen of the human genetic blueprint that nature created by evolution. Therefore he had no genetic diseases or defects, so was as close to immortal as a living being could be. Those impossible to believe lifespans in the 'begats' of Genesis do not reflect the average lifespan of humans, but only the direct descendants of Adam. That's why their ages are listed, as the extreme ages of these people are the sign that they are descended from Adam. All other humans lived perhaps seventy tops. It's a major problem with people who just pick up a bible and start from the beginning and read, when they get to the 'begats' they think ... what BS ... without understanding the real meaning of the text.