When someone goes without sex for a period of time, the body does not become damaged or stop functioning normally. Instead, it adjusts. Sexual desire can rise, fall, or stay stable depending on stress, emotions, health, and life circumstances.
Some people may notice temporary changes in comfort, arousal, or responsiveness after a long break, but these are usually not permanent. Things like hormones, age, overall health, and emotional comfort play a much bigger role than sexual frequency alone.
Overall, sex can be one part of a healthy life, but it is not required for physical or emotional health. People can still live healthy and fulfilling lives during abstinence, and well-being depends much more on the full picture of lifestyle, relationships, and overall health.
