Testosterone Levels by Age: Normal Levels for Males and Females High testosterone symptoms, causes & testing Cholesterol abnormalities and heart disease were once on that list, but they now appear less likely. Men also lose muscle mass and bone density; the red blood cell count drifts down; sexual ardor declines; and body fat increases. In theory, at least, testosterone therapy might attenuate or reverse each of these changes. Testosterone is a sex hormone that both males and females produce. During male puberty, testosterone spikes and remains higher than female hypothyroidism testosterone deficiency (tb-onderdelen.nl) levels throughout the lifetime. Males are more likely to experience symptoms from low testosterone levels, while females are more likely to have negative effects from high testosterone levels. The graph below demonstrates how the reference ranges are calculated using standard deviations. These results show a reduction in total and free testosterone levels with age and increased SHBG (sex hormone binding globulin). Higher levels of this protein mean there is less free (unbound) testosterone – just one of the reasons that free testosterone drops so much with age. In the above example, this man had ‘normal’ total testosterone levels yet low free testosterone levels. This illustrates why it’s crucial not to rely solely on total testosterone measurements for a complete picture of your hormonal health. It can be a great indicator of low testosterone, but it doesn’t always reveal the complete picture. Testosterone plays a role in mood regulation, and low testosterone levels can lead to irritability, depression, and anxiety. Testosterone imbalance can have an impact on your appearance, daily functioning, sex life, and even fertility. So if you think you have a testosterone imbalance, it’s important to seek treatment to regain your health and well-being. While testosterone levels have fallen in recent years, the rate is more modest than 50%, experts say. However, there’s no official consensus on healthy testosterone levels. According to the American Urological Association (AUA), healthy male testosterone levels range between 450 and 600 ng/dL, and low testosterone is below 300 ng/dL. The two charts below list the general normal ranges of testosterone based on age and sex. Testosterone is a hormone that your gonads (testicles or ovaries) mainly produce. If testosterone levels are too high or too low, it can cause certain symptoms. Most of the testosterone in your blood is bound to two proteins, while a portion of it, known as free testosterone or bioavailable testosterone, remains unbound and active. Increased muscle mass, mood changes, and fertility problems are common. Often, we find that anxiety or depression – not hormonal imbalances – are the root cause of low-T-like symptoms. Suppressing your emotions can interfere with normal functions, such as focusing at work or maintaining an erection. If you truly have low-T, underlying stressors can make symptoms worse. It is well known that exogenous testosterone can – and often will – cause infertility. Unfortunately, some doctors prescribe testosterone to treat infertility, and inadvertently make the problem worse. In males, testosterone production begins very early