Introduction:
The conversation is between two brothers who are discussing the ill effects of eating junk food. They both are concerned about their health and are trying to find a way to avoid eating junk food.

Brother 1: Hey, have you noticed how much junk food we have been eating lately?

Brother 2: Yeah, I have. I am worried about the impact it might have on our health.

Brother 1: Exactly, I think we should start eating healthy food from now on.

Brother 2: I agree. Junk food might be tasty, but it is not good for our health.

Impact on Physical Health:
Brother 1: Do you know what happens when we eat junk food regularly?

Brother 2: No, what happens?

Brother 1: It can lead to obesity, diabetes, heart disease, and other health problems.

Brother 2: That's scary. I don't want to end up with any of those health issues.

Brother 1: That's why we need to start eating healthy food, like fruits, vegetables, and whole grains.

Impact on Mental Health:
Brother 2: I also heard that junk food can have an impact on our mental health.

Brother 1: Yes, it can lead to depression, anxiety, and other mental health problems.

Brother 2: That's really bad. I never thought junk food could have such a big impact on our overall health.

Brother 1: Yeah, it's important to be aware of what we are putting into our bodies.

Conclusion:
Brother 2: I think we should start making some changes to our diet and start eating healthy food.

Brother 1: Agreed. Let's start by cutting down on junk food and incorporating more fruits, vegetables, and whole grains into our diet.

Brother 2: Sounds like a plan. Let's take care of our health and make some positive changes in our lifestyle.