Physical closeness helps relax muscles and release built-up tension. Without it, some people experience increased muscle stiffness, headaches, or general bodily discomfort. This does not mean intimacy is a medical treatment, but rather that the nervous system benefits from safe, comforting physical contact. As mobility already becomes more limited with age, this loss of relaxation can feel more pronounced.
Perhaps the most significant changes occur emotionally. Intimacy supports feelings of belonging and being valued. When it fades, some older adults report increased loneliness—even if they are not socially isolated. Loneliness is not simply being alone; it is the absence of meaningful connection.

Emerging research suggests that emotional connection and touch play a role in brain health. Intimacy stimulates neural pathways associated with memory, emotional regulation, and motivation. When these stimuli decrease, especially alongside social withdrawal, cognitive engagement may decline more quickly. This does not mean intimacy prevents cognitive aging, but it can be one of many protective lifestyle factors
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