A medical professional would recommend dietary supplements to Diane, as not being able to digest milk and other dairy products means her regular diet may be disrupted/changed.
Chris has no need for dietary supplements, as they will not help improve his focus or concentration.
Cassandra would not be recommended dietary supplements by a medical professional as they would not enable her to lose weight quickly, and it is also unhealthy to try and lose weight quickly, therefore it is in the medical professional's best interest to not recommend them to her.
