In todayâs world, weaning is not done to aid the mother. Rather, it is done because puppies generally make their way to their new home at about seven weeks of age, and since their mother is not going with them, the pups need to have their gastrointestinal tracts accustomed to eating commercially prepared foods.
Causes of stomach ulcers. Stomach ulcers are usually caused by Helicobacter pylori (H. pylori) bacteria or non-steroidal anti-inflammatory drugs (NSAIDs). These can break down the stomach's defence against the acid it produces to digest food, allowing the stomach lining to become damaged and an ulcer to form.
Peptic Ulcer Disease: Causes Protective vs. Hostile Factors âNo gastric acid, no peptic ulcerâ is a misconception. Excessive gastric acid secretion is only one factor in the pathogenesis of peptic ulcer disease.Decreasedmucosal defense against gastric acid is another cause.igure 4. Pathogenesis of peptic ulcer disease. Helicobacter pylori H. pylori is the etiologic factor in most patients with peptic ulcer disease and may predispose individuals to the development of gastric carcinoma.