Osteoarthritis is a condition where the cartilage in joints deteriorates, resulting in painful and stiff joints. Additionally, the bone around the joint may change. The joints themselves do not wear out, but the surrounding factors do, making joint movement less smooth.
During menopause, the hormones oestrogen and progesterone decrease. Oestrogen helps keep cartilage strong and mucous membranes moist. When this hormone declines, cartilage can become thinner, and mucous membranes drier. This can also manifest as dry eyes, a dry mouth, or vaginal dryness. As the cartilage layer between your bones becomes thinner and less smooth, joints move less fluidly and may rub against each other. This causes pain, irritation, or inflammation.
Science has yet to fully understand the exact role of hormones in osteoarthritis. However, it is known that oestrogen is essential for healthy bones, joints, and cartilage. Many women experience osteoarthritis or joint pain after menopause.
The World Health Organization (WHO) estimated in 2019 that approximately 528 million people worldwide live with osteoarthritis. Of these, 73 per cent are over 55 years old, and the majority are women. This may be linked to declining hormone levels.