There are numerous circumstances that give pathogens the chance to harm people.
The first occurs when an infection has already weakened the immune system. In situations like this, other pathogens may infect the host opportunistically and cause an infection. If the human host does not maintain proper personal and environmental hygiene, that is another condition. Many pathogens thrive in unclean environments, so by failing to maintain proper environmental hygiene, a person increases his risk of contracting a pathogen.
Finally, since so many pathogens are transferred by vectors, humans are more likely to contract the diseases that these vectors aid in spreading if they do not take the necessary precautions to stop their activity.
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A medical professional would definitely not approve of quick weight loss, A med. professional would more likely recommend a neurologist for ADHD symptoms like Chris has, and they would recommend a supplement like acidophilus for digestive disorders like Diane's lactose intolerance, so I believe the answer is the last choice given.
The women should walk a little each day to improve her stamina & to prevent getting out of breath. She should walk a little and gradually walk more each time.