The Science Behind Libido: How Hormones and Lifestyle Affect Sexual Desire

Written by Corinne O'Keefe Osborn

Medical Writer

Published 1/15/2026

Libido, or sexual desire, is influenced by a complex interplay of biological, psychological, and social factors. Understanding these factors can help you make informed decisions about your sexual health and well-being.

Hormonal Influences

Testosterone plays a crucial role in libido for both men and women, though its effects are more pronounced in men. Other hormones, including estrogen, progesterone, and cortisol, also influence sexual desire. Hormonal imbalances can significantly impact libido, which is why it's important to have your hormone levels checked if you're experiencing changes in sexual desire.

Lifestyle Factors

Regular exercise, adequate sleep, stress management, and a balanced diet all contribute to healthy libido. Conversely, chronic stress, poor sleep, excessive alcohol consumption, and sedentary lifestyle can negatively impact sexual desire. Making positive lifestyle changes can often improve libido naturally.

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