Nerve Interference in the spine is called a vertebral subluxation. Lifestyle Interference is a result of poor health habits such as overeating, poor nutrition, excessive drinking, taking prescription or non-prescription drugs, or sitting too much. Environmental Interference is caused by toxicity from air, food, water, or chemicals, as well as accidents or natural disasters. All three types of interference can cause pressure in your spine and nervous system and affect your health on every level.