For me skipping breakfast does not increase my blood glucose throughout the day. I have been a frequent tester and 100% of the time my blood glucose of say was a 4.2 fasting, by my meal circa 16:00 would be 3.8 / 3.9 ish, never higher than the fasting.
I have this theory: people go into remission when they diet because they are dropping their carbs, particularly their refined carbs,as part of their reduction in food intake. As we know from several members on here, including myself, you can go into remission without losing weight by cutting carbs.
I wish they had defined a big breakfast. The typical cereal, toast, marmalade, fruit juice is not going to help if that is increased : (
Finally, the main study being referenced is the E3- EPIC one run by the EU and is a major data collation exercise, and these guys are not doing the study themselves, but are analysing the database produced by EPIC. Now EPIC has many heads like a hydra all doing different collections of info on different groups of patients. It seems the one that WW writes about involves a group (cohort) of overweight women, and is looking for association between acidic foods and T2D risk specifically. It is a recognised study.
Michael Lean MD may be Michael E J Lean, Professor Glasgow Uni who is part of the DIRECT study into weight loss, in conjunction with Newcastle University. (ND diet anyone?)