Dr. Sabine Hazan about the importance of Bifidobacteria

"So Bifidobacteria is the bacteria that is in your probiotics. It's that industry of, I think it's probably up to a trillion dollar industry of probiotics by now. So that bacteria is very present in newborns and it basically disappears with the aging process. So essentially you're born with a lot of microbes and you die with very little.
So there was a thought that possibly this bacteria could be significant in health, right? And thus the billion-dollar, trillion-dollar industry of probiotics. When you look at the microbiome of people that have disease, when you look at Crohn's disease, when you look at ulcerative colitis, when you look at invasive cancer, Lyme patients, those people have zero Bifidobacteria. So you have to ask yourself, is the beginning of the disease, the loss of Bifidobacteria? And is this why it's a chain reaction, right? Everything in life is action leads to a reaction. You eat a hamburger where the cow is full of antibiotics and vaccinated galore, and then you get sick with Clostridium difficile, that bacteria starts secreting toxins, gives you diarrhea. And then eventually what happens is you need an antibiotic to kill that bacteria, but then you're killing off the whole microbiome. So a microbe doesn't just sit on an island. A microbe starts the chain reaction where action leads to a reaction. So that's really what I think."