Tom House pitched for the Atlanta Braves from 1971-1975, House has admitted using steroids and other PEDs when he was with the Braves, and has said that other players on the team did the same. Hank Aaron was on the Braves during that period. And . . . .
In 1968, the 34-year-old Aaron fell to 29 home runs.
In 1969, he jumped to 44.
1970--38
1971--47 in only 495 at-bats. That was the highest single-season total of his career. And he was 37 years old.
1972--34 in 449 at-bats. Not had for a 38-year old. But wait, there's more.
1973--40 in a mere 392 at-bats, the highest season home-run rate of his career, and he got to the brink of breaking Babe Ruth's record. A clean 39-year-old isn't supposed to do that, right?
At the beginning of 1974, Aaron broke the record.