A healthy diet and regular physical activity are widely recognised as the foundation of good health, while the role of sleep is comparatively overlooked by society. Indeed, good-quality sleep is a fundamental component of a healthy lifestyle. Sleep is often associated with its effects on mood, stress tolerance, and cognitive performance, but its physiological influence extends far beyond these functions. Adequate sleep is essential for numerous biological processes, including hormone regulation, weight and blood glucose control, immune function, mental health, and tissue repair, among others.
Because sleep underpins so many physiological systems, insufficient sleep can have widespread effects on health and daily functioning. When sleep is consistently inadequate, the body effectively enters a state of chronic physiological stress. As a result, many individuals actively seek interventions to improve their sleep. Sedative-hypnotic medications are therefore frequently requested in South African pharmacies. And, in clinical practice, it is not uncommon for patients to express greater concern about forgetting their prescribed sleep medication when travelling than about leaving behind medications for conditions such as hypertension or diabetes. These patterns reflect the growing societal burden of insufficient and poor-quality sleep.
Over time, several factors have contributed to declining sleep quantity and quality. A major driver is the constant, 24/7 access to social media - a psychological stressor - delivered through electronic devices, which are themselves disruptive to healthy sleep. At the same time, “hustle culture” and a growing tendency to stay up late to reclaim personal time after work have further eroded sleep duration. Consequently, prioritising adequate, high-quality sleep has become more important than ever, both at an individual and societal level.
Sleep hygiene is the first-line strategy aimed at improving sleep quality. Key practices include maintaining a consistent bedtime, reducing screen exposure before sleep, avoiding late meals, and creating a comfortable sleep environment. However, for some individuals, particularly those experiencing high levels of stress, these measures alone may not be sufficient. Fortunately, there are additional approaches that can support better sleep without immediately resorting to hypnotic sleep medications.
Magnesium supplementation is one such strategy that may support improved sleep. Magnesium is involved in more than 300 enzymatic reactions in the body and plays an important role in nervous system regulation, muscle relaxation, and mental well-being. Despite its importance, magnesium deficiency or suboptimal intake is relatively common. Supplementation, especially in the evening, may help promote relaxation and support sleep quality. Forms such as magnesium glycinate and magnesium threonate are often preferred due to their favourable absorption and potential calming effects, which may contribute to more restful and restorative sleep.
Other nutraceuticals may also support sleep by promoting relaxation and reducing stress. L-theanine, an amino acid naturally found in green tea, is known for its calming effects on the nervous system. It has been shown to promote relaxation without causing sedation, partly by increasing alpha brain wave activity and modulating neurotransmitters involved in stress and sleep regulation. As a result, L-theanine may help reduce anxiety and support the transition into sleep.
Similarly, ashwagandha (Withania somnifera), an adaptogenic herb widely used in traditional medicine, may support sleep by helping to regulate the body’s stress response. Ashwagandha has been shown to lower cortisol levels and improve resilience to stress, which can be particularly beneficial for individuals whose sleep difficulties are driven by chronic stress or heightened physiological arousal. Emerging evidence suggests that supplementation may improve both sleep quality and sleep onset in some individuals.
In a different approach, melatonin may be used to help regulate the circadian rhythm. Melatonin is a hormone naturally released by the body at night that signals the onset of sleep and helps coordinate the sleep-wake cycle. Exogenous melatonin supplementation can mimic this physiological signal, making it particularly useful in situations where circadian rhythms are disrupted, such as jet lag.
Conclusion
Sleep is a cornerstone of physical and mental health, yet it remains one of the most neglected aspects of modern lifestyles. While improving sleep hygiene should always be the first step, targeted nutraceuticals and supplements may provide additional support for individuals struggling with sleep disturbances. By recognising the importance of sleep and addressing the factors that disrupt it, individuals can take meaningful steps toward improving both sleep quality and overall health.