Good spotting. The 1968 Olympics may have been a steroid-fest.
https://thinksteroids.com/articles/history-anabolic-steroids-sports/➡"The Mexican Steroid Industry Becomes International Player in Steroid Trade
The pharmaceutical company Parke-Davis funded Marker’s 1942 expedition to Mexico but rejected proposals to commercialize the discovery. The president of Parke-Davis didn’t consider Mexico a reliable investment given its instability and anti-American sentiment in the midst of World War II.
Marker resigned from Parke-Davis in 1943. He shopped his discovery to other American pharmaceutical houses which all rejected his proposal.
So, in 1944, Marker founded Syntex SA in Mexico City, with investments by the Mexican company Laboratorios Hormona SA, for the commercial production of steroid hormones.
The Mexican steroid industry, including “Syntex” and several other steroid companies, produced the bulk of sex hormones sold in the United States and became an international player in the field.
The price of anabolic steroids fell drastically setting the stage for their increased use in sport and society."
➡"Steroid use rapidly spread to many other sports during this period. It has been estimated that most Olympic athletes at the 1968 Mexico City Olympics had experimented with some type of anabolic steroid. The systematic and organized use of steroids had already made its way into professional American football.
So many athletes in all elite athletic disciplines were using steroids by 1969 that Jon Hendershott, editor of Track and Field News, facetiously called anabolic steroids the “breakfast of champions.""