I would recommend to most that they do a search and find nutritional resources which can help themselves change lifestyle eating habits, loose weight which reduces stress upon the body, exercise, etc. Such sites to help could be:
- http://www.nutritionaustralia.org
- http://www.nutrition.gov
- http://www.healthinsite.gov.au
- http://www.ais.org.au/nutrition/
There are plenty more. The Government one's from Australia and the US are good resources that contain Government endorsed sites. The AIS stands for (Australian Institute of Sports), so it is my recommendation.