肠道菌群影响肥胖

But those phenomena is under the condition that the mice were fed with high cellulose and low fat （高纤维素 低脂肪）food. When fed them with high fat and low cellulose（高脂肪低纤维素）,the mice were not become lean.
The second phase, the fat mice and the thin mice was fed in one cage. Because the mice have coprophagia( 食粪癖), so thier gut bacteria were mixed.
After 10 days, the obese mice get thinner.
The obese (胖) one
The lean (瘦) one
Ob
microbiota Transplanting germ-free（无菌的） mice
Ln
After 5 days
The bacterial component of Ob co-twins’fecal microbiota conveyed significantly greater increases in body mass and adiposity than those of Ln communities.
Q1. What is the result of this experiment ?
Gut microbiota are closely related to human's weight
Bacteroidetes is beneficial to weight control
The healthy diet had a great influence on weight
Q2. What else can affect a person's weight ?
genetic factor
Eating habits
Daily exercise
Thank
you for your attention!
Twins Discordant
Twins discordant for obesity (肥胖) provide an opportunity to examine interrelations between obesity and the gut microbiota（肠道微生物）.
Separating and cultureing the microbiota from human fecal（粪便）
Ob
Ln
So we can conclude

Gut microbiota is correlated with the obesity（肥胖） of our Fra bibliotekody.
Genome sequencing and metabonomics studies have shown that this phenomenon is result from the special intestinal flora --the bacteroidetes（拟杆菌）