It's hard to tell that early, but some doctors can catch it in time. Signs would be heart defects or growth delays.
Well first you need a goal like i do cuz my goal is to be a pro skater
The socioeconomic impact of NCDs
Vulnerable and socially disadvantaged people get sicker and die sooner than people of higher social positions, especially because they are at greater risk of being exposed to harmful products, such as tobacco, or unhealthy dietary practices, and have limited access to health services.
When you are in stress your body and mind are tense and your body and mind cannot concentrate or operate as it normally does, Resulting in many different downsides like not being able to exercise properly.
Your audience should probably be adults. If adults learn the healthy habits of eating they can pass it on to their children and friends. Maybe posters or news segments could work to spread the news. This idea could work because adults watching the news segment and Billboards will choose not to pick up that snickers in the grocery store check out but instead trail mix.
Thats all you will need, just elaborate a bit more!