Final answer:
Regular use of NSAIDs can cause gastritis and deficiencies of iron, vitamin C, and vitamin B12.
Step-by-step explanation:
Regular use of nonsteroidal anti-inflammatory drugs (NSAIDs) can cause gastritis and deficiencies of certain vitamins and minerals. The most common deficiency associated with NSAID use is iron deficiency anemia. NSAIDs can cause bleeding in the stomach and intestines, leading to chronic blood loss and subsequent iron deficiency. Other deficiencies that can be caused by NSAID use include vitamin C deficiency and vitamin B12 deficiency.