00:00 The digestive system is a complex network of passageways that starts at the mouth and ends at the anus, spanning about 30 feet in length.

04:45 The digestive system starts at the mouth and ends at the anus, with the small intestine having the surface area of a tennis court and the process of digestion beginning when food is picked up and brought to the mouth, triggering the brain to send a signal to the salivary glands to produce saliva containing digestive proteins.

09:24 Throughout the process of digestion, the stomach and intestines contract and expand, producing enzymes and acids to break down food, and if the protective mucus in the stomach is compromised, ulcers can occur.

14:00 The small intestine is responsible for digestion and absorption of food particles, while the large intestine absorbs nutrients and prepares waste for elimination.

18:59 The large intestine is slower than the small intestine and uses mucus to help move waste through, while the liver and pancreas produce enzymes to break down food in the small intestine, and hormones control the digestive process.

23:52 The digestive process involves the signaling of peristalsis by acetylcholine and the inhibition of muscle contraction by adrenaline, with intrinsic nerves in the gut being activated by the pressure of food, and digestion involves the breakdown of carbs, proteins, and vitamins, with carbs being broken down into glucose and stored in the liver for energy, proteins being broken down into amino acids, and vitamins being absorbed and either easily eliminated or stored in lipocytes, and belching and vomiting are normal parts of digestion.

28:41 Vomiting is considered normal if bad bacteria is irritating the system, GERD affects 22 million Americans, peptic ulcers are caused by H. pylori bacteria and can be cured with antibiotics, and lactose intolerance can cause digestive troubles.

33:37 Lactose intolerance is the inability to digest milk sugar, and there are different types of inflammatory bowel diseases, including ulcerative colitis and Crohn's disease.

38:36 Irritable bowel syndrome (IBS) is a condition where the brain and intestines do not communicate properly, leading to symptoms such as cramps, gas, and diarrhea, but the exact cause is unknown and treatment typically involves medication.

43:54 The hosts discuss their Kiva team's success in lending over $750,000 in loans in two years and their goal to reach $1 million in loans, highlighting the impact that even small loans can have in helping people in need.