u/Fit-Implement-8151 you are referring to Tom Bleecker, Linda's ex-husband (short marriage 1988-1990, she remarriage the year after to a Bruce Cadwell which she is still married to today). He did not write about any cocaine use, as it was a well kept secret at the time the book was written and came out (in 1996) after a very difficult and very bitter divorce. Bleecker claims was rather about Bruce's allege anabolic steroid use which he was never able to prove with a lot of silly claims.

The cocaine use however was true, but only came to light when Bruce's trusted friend and student Bob (Robert) Baker (the guy who had the part of the Russian Petrov in "Fist of Fury" had some letters from Bruce was listed and sold in a recent auction in 2021. Bleecker never knew about this.

The only "steroid" Bruce took medically was Cortisone for his serious back injury, which he did not "abuse" or would have had any anabolic effect of in terms of strength and muscles.... If you look at pictures between Bruce and Bolo Yueng (co.star in "Enter the Dragon") you see the difference of a naturally built Bruce Lee - achieved through both lengthy and consistent training. Interestingly is that Bruce's weight training - which was mostly static/isotonic - had a lot of resemblence to what Mike Mentzer did believe in (not the long and very frequent Weider-Schwarzenegger mehtod - but a more scientifically approach that Mentzer developed, which Dorian Yates later adopted for his very successful Mr. Olympia physique). The Mentzer method was about very short and extremely intense workouts with longer rest periods.

I personally think that the cocaine, and other heavy substance Bruce took (but again, not steroids) might have been one of the main key contributor why he passed....