7 out of 9 people have Osteoporosis. 99% of calcium is found in the bone and the other 1% helps in many of the bodys biochemical processes, such as muscle contractions, conduction, enzyme processes and cellular communication. When the body is lacking calcium to perform the other 1% of its duties the body takes the needed calcium from bone supply. Over time this depletes the calcium content in the bones which can lead to bone loss. Signal has a 90% absorption of calcium and the dosage for adult is 4 per day.