As the GP, I do not think the title is correct. The Warburg effect does not tell that sugar causes cancer, it tells that cancer cells prefer one of the two mech

As the GP, I do not think the title is correct. The Warburg effect does not tell that sugar causes cancer, it tells that cancer cells prefer one of the two mechanisms to create ATP. This mechanism is the glycolysis (something used in fermentation), which is much less effective than the other mechanism which uses oxygen (used indeed in respiration) to produce ATP. From the article abstract, they hint that the cell cycle is quicker with glycolyse than with respiration.