Diets in high in non-starchy vegetables, such as broccoli, spinach, and beans, may help protect against stomach and esophageal cancer. Eating oranges, berries, peas, bell peppers, dark leafy greens and other foods in high vitamin C may also protect against esophageal cancer.
Effective communication is obviously influenced by different fators among which we can surely include acceptance of responsibility. You have to consider that when someone is taking responsibility for his actions this will make the person who he's talking to view him more favourably, as a more responsible person and perhaps even as someone who wants to sensibely solve problems.
I would expect the kids to enjoy their time on technology and not be exposed to anything that they should not be.
body language, has he been acting weird? Agreeing or disagreeing in a joking way, lot of eye contact, complements you, the way he responds to touch (like a hand on his shoulder, holding his hand, ect.), and does he lean forward when your speaking to him despite already sitting close
