The potential negative effects of extremely high testosterone levels are a concern, as they can significantly impact an individual’s quality of life and overall health. However, excessively high testosterone levels can also lead to negative effects, such as acne, hair loss, and an increased risk of cardiovascular disease. For instance, low testosterone levels have been linked to fatigue, decreased libido, and osteoporosis, while excessively high levels can lead to acne, hair loss, and an increased risk of cardiovascular disease. Testosterone is a vital hormone in the human body, responsible for the development and maintenance of male reproductive tissues, promoting secondary sexual characteristics, and influencing overall health and well-being. While exceptionally high testosterone levels can confer advantages in terms of physical performance, they also come with potential health risks. The average testosterone levels in adult males are about 7 times higher than in adult females, reflecting its significant role in male physiology. This reaction engages penile reflexes (such as erection and ejaculation) that aid in sperm competition when more than one male is present in mating encounters, allowing for more production of successful sperm and a higher chance of reproduction. Every mammalian species examined demonstrated a marked increase in a male's testosterone level upon encountering a novel female. Therefore, these mammals may provide a model for studying clinical populations among humans with sexual arousal deficits such as hypoactive sexual desire disorder. Studies conducted in rats have indicated that their degree of sexual arousal is sensitive to reductions in testosterone. Sexual arousal and masturbation in women produce small increases in testosterone concentrations. Testosterone is often referred to as the "male hormone" due to its significant effects on the male body, but it is also present in females, albeit at lower levels, where it contributes to the regulation of the menstrual cycle, fertility, and overall health. It plays a crucial role in spermatogenesis, the production of red blood cells, and the maintenance of muscle mass and bone density. This hormone is vital for the development of male characteristics, including facial and body hair, deepening of the voice, and increased muscle and bone mass. Recent research shows that there is no risk of cognitive decline in women with low blood testosterone levels. Increase in male hormone testosterone helps improve body composition, even in men with low testosterone levels Moreover, bone health is significantly impacted by testosterone, as it helps maintain bone density, minimizing the risk of osteoporosis and fractures. Its influence extends to metabolic processes, affecting how the body regulates blood sugar and maintains healthy fat distribution. Additionally, testosterone plays a role in libido and erectile function, contributing to the overall sexual health of individuals. "And lots of women with so-called normal blood levels of testosterone with low libido may still benefit." For adult males, normal testosterone levels typically range from 300 to 1,000 nanograms per deciliter (ng/dL), while for adult females, the normal range is between 15 and 70 ng/dL. By embracing a holistic approach to health and wellness, individuals can optimize their testosterone levels in a way that supports overall health and well-being, rather than solely focusing on achieving the highest levels possible. However, such high levels of testosterone, especially when not naturally occurring, can lead to side effects such as acne, baldness, and increased risk of cardiovascular diseases. While it’s challenging to pinpoint a single individual with the highest testosterone levels due to the variability in measurement and the private nature of such data, professional athletes and bodybuilders often exhibit higher testosterone levels. Certain health conditions, including hypogonadism (a condition in which the testes do not produce enough testosterone), can also affect testosterone levels. For instance, a diet rich in protein, healthy fats, and vegetables can support testosterone production, whereas chronic stress and obesity can suppress it. "I think there are people who are being prescribed testosterone being told that they’re gonna feel better, they’re gonna get energy and vitality and mood," says Davis. Despite that, many women who experience a low sex drive aren’t getting the treatment they need. "Every study, regardless of size, shows benefit over placebo," Davis says. "With the explosion about testosterone on media platforms, most of the medical community is not really caught up," she says. She and her team are interested in other outcomes, as well, noting that evidence is emerging of a link between bone metabolism and glucose metabolism, or diabetes control.