Final answer:
Consuming more than 200 milligrams of vitamin B6 can lead to neurological damage, underscoring the importance of adhering to recommended upper intake levels to prevent toxicity from excessive consumption of certain vitamins.
Step-by-step explanation:
Taking a supplement with more than 200 milligrams of vitamin B6 can result in neurological damage. It is critical to follow Tolerable Upper Intake Levels for micronutrients to prevent toxicity. High intakes of vitamin B6 have been linked to symptoms such as sensory neuropathy and ataxia, which reflect damage to the nervous system. While vitamins are essential for health, an excess of certain micronutrients, just like deficiencies, can lead to serious health complications. For example, too much vitamin A may cause toxicity to the liver, and excessive niacin can result in various side effects like peptic ulcers and hyperglycemia.