BMI categories were defined according to World Health Organization guidelines as underweight (28) and has been used to monitor physical activity in several patient groups, including patients with knee OA (29). Serum concentration of total testosterone was measured by an electrochemiluminescence immunoassay (Roche Diagnostics) with an interassay coefficient of variation of 3.9% at a level of 7.3 nmoles/liter and 3.5% at a level of 18.8 nmoles/liter. Of 273 participants enrolled, 1 male participant was excluded due to missing data on serum testosterone concentration, reducing the analytical sample size for this study to 272 (for the radiologic assessment data were only available for 270 participants). Although the underlying mechanisms for these differences are not well understood, an influence of testosterone on nociceptive processing is well established (19, 20). With regard to pain sensitivity and potential relevance to OA, clinical and experimental investigations have consistently shown sex‐specific differences for both pain sensitivity and threshold (19). The sex difference in knee OA prevalence and severity in the second half of life has not been well understood (4, 6). However, the gradual and natural decrease in testosterone with age does not usually lead to a diagnosis of low testosterone on its own. As such, individuals with osteoporosis mostly experience pain from fracture injuries and healing periods. Although osteoporosis is not generally a painful condition, the main concern is broken bones. As a result, low testosterone increases your risk of developing osteoporosis. The goal is to find out whether there is another problem, such as arthritis or gout, that needs treatment. Testosterone therapy may not cause these problems, but it can sometimes make them easier to notice. An underlying condition is a health problem that is already present or developing. A side effect is something that happens directly because of a medicine or treatment. This can result in symptoms like joint redness, swelling, and aching. Inflammation is the body’s way of fighting off harm, but when it becomes chronic or too strong, it can damage healthy tissues. High estrogen levels can lead to increased water retention. Aromatization is a natural process where an enzyme called aromatase converts some testosterone into estradiol, a form of estrogen. For example, if therapy increases energy levels, someone might suddenly start lifting heavier weights or working out more often. Genes also play a role in how the body processes hormones. These studies follow patients over many years to monitor changes in joint pain and overall health. Researchers need to explore how testosterone therapy works in combination with these other treatments to ensure safety and maximize benefits. The field of hormone therapy, particularly testosterone therapy, is continuously evolving. Managing stress effectively is therefore an important part of maintaining overall health and enhancing the benefits of testosterone therapy. Exercise helps to strengthen the muscles around your joints, which can reduce the stress on these joints and decrease pain. Thus, low testosterone inhibits bone reinforcement after osteoclasts break down old bone, causing weakened bones. However, osteoclast activity remains relatively unchanged with low testosterone. Consequently, testosterone deficiencies result in decreased osteoblast activity. The choice often depends on patient preference, cost, ease of use, and medical history. Testosterone is a hormone made mostly in the testicles in men. The goal is to help patients and doctors understand this issue better. It will explore what the medical research says, what might cause this side effect, and how to manage it. Pain that lasts for more than a few days, gets worse with activity, or comes with swelling and redness may need medical attention. Some people report stiffness in the morning that lasts for a short time. They carry a lot of body weight and are used for walking, climbing stairs, and bending. In other cases, the pain starts suddenly and feels sharp. This pain can affect daily movement and lower quality of life. Other health conditions or increased physical activity can also play a role. Instead, it may work together with other factors to bring on symptoms.