Sex hormones: Low estrogen levels due to missing menstrual periods or to menopause can cause osteoporosis in women. Low testosterone levels can bring on osteoporosis in men. Anorexia nervosa: This eating disorder can lead to osteoporosis. Calcium and vitamin D intake: A diet low in calcium and vitamin D makes you more prone to bone loss. Medication use: Some medicines increase the risk of osteoporosis. Activity level: Lack of exercise or long-term bed rest can cause weak bones. Smoking: Tobacco is bad for the bones, heart, and lungs.
Compressed Versus Uncompressed. Digital audio can be split into two types of formats, compressed and uncompressed. Uncompressed formats like CD Audio, WAV, or AIFF are pretty much perfect representations of the audio that was recorded. If you convert something from one uncompressed format to another, it's a completely perfect copy.
Audio Video Standard (AVS) is a compression standard for digital audio and digital video, which was meant to compete with AAC audio and H.264/MPEG-4 AVC video to potentially replace MP3 audio and MPEG-2 video. Chinese companies own 90% of AVS patents. The audio and video files have an .avs extension as a container format.