What's the general medical/scientific consensus on the safety of wireless communication services - phone, internet, etc. i read and hear so many things that say these things pose all sorts of health risks. true or not?

There is no objective evidence that usual use of cell phone is a risk to health. Using internet has no health risks other than getting addicted to content, e.g., porn. For healthy diet: http://www.choosemyplate.gov/., exercise 30 minutes/day, drink enough water daily so your urine is mostly colorless, have safe sex, no tobacco alcohol weed or street drugs. Wish you good health!