Alzheimer’s Disease Prevention

A complex interaction between cortisol and dehydroepiandrosterone-sulphate (DHEA-S) is crucial in the stress system balance. In particular, significantly higher or lower cortisol/DHEA(S) ratios have been associated with depression and aggression. In general, DHEA-S levels affect various body systems, as well as prevent aging (Chahal and Drake 2007). That is why the Cortisol DHEA ratio is a very informational indicator, which, along with other indicators calculated in Healsens, provides important information about human health. Thus, using the ratio of cortisol / DHEA-S, you can assess body responses to exercise or evaluate mental health. Another benefit is that you can check your cortisol and DHEA-S levels at home. This article was last reviewed by Svetlana Baloban, Healsens, on January 24, 2020. This article was last modified on 4 March 2021. How Cortisol and DHEA Sulfate Affect the Body Let’s start by looking at how cortisol and DHEA-S affect overall health. Dehydroepiandrosterone (DHEA) and cortisol are produced in the adrenal glands and are both derived from pregnenolone. So, DHEA and DHEA-S production reaches its peak at the age of 20–30 and then declines progressively with age. When it comes to cortisol levels, while some studies show that cortisol increases with age, others do not support this observation. However, everyone agrees that the reduction in DHEA-S entails disruption of various physiological systems. Stress Level As mentioned above, DHEA and DHEA-S play a protective role during acute stress as an antagonist to the action of the stress hormone cortisol. In turn, cortisol also helps to effectively manage stress. Let’s see how this happens. About 15 minutes after a stressful situation, cortisol levels rise and remain elevated for several hours. This marks the onset of stage 1. During this stage, there are elevations in cortisol with no corresponding changes in DHEA. Subsequently, glucose is mobilized, non-essential organ systems are suppressed, and inflammation is reduced. All of these physiological responses collectively enable the body to effectively cope with stress. However, in cases of chronic stress, this adaptive reaction can take a catastrophic turn: cortisol loses its ability to function normally. This transition ushers in stage 2. In this latter stage, the persistence of stress leads to a sustained peak in cortisol levels, matched by a corresponding elevation of DHEA. IN THIS ARTICLE 1 How Cortisol and DHEA Sulfate Affect the Body 2 Assessing Exercises 3 Adrenal/DHEA Restoration RELATED ARTICLES It becomes increasingly challenging to maintain appropriate blood sugar levels, to allow for adequate rest, to achieve high-quality sleep, and to achieve a harmonious balance among other hormones. This signals the arrival of stage 3, wherein stress persists and becomes chronic. During this stage, cortisol levels decrease, while DHEA remains elevated. In the absence of timely intervention, prolonged adrenal hyperstimulation can result in adrenal exhaustion. This condition is eventually manifested by a decline in both cortisol and DHEA, a phase often denoted as adrenal exhaustion or stage 4. Ultimately, this process may culminate in adrenal failure. Thus, the optimal ratio between salivary cortisol and DHEA is approximately 5:1 to 6:1, serving as an indicator of a normal state of adaptation to stress. When the body’s ability to maintain its normal stress adaptation is compromised, a process known as stress maladjustment can ensue. This phenomenon is now recognized as a chronic stress response, often identified by terms like pregnenolone steal, cortisol escape, or an elevated cortisol to DHEA ratio. The longer one remains in a state of chronic stress, the more pervasive its negative impact becomes on various aspects of physical well-being. As a result, individuals grappling with depression or heightened anxiety levels (measured at 0.24 ± 0.03 in the healthy group compared to 0.41 ± 0.12 in the group of individuals with severe anxiety), along with those dealing with post-traumatic stress disorder, exhibit disruptions in the cortisol to DHEA ratio. Nevertheless, it’s worth noting that certain studies have demonstrated the potential of DHEA treatment to mitigate the adverse health effects associated with stress. Musculoskeletal disorders We have already mentioned that cortisol dysfunction entails disorders of the musculoskeletal system. Thus, the higher the cortisol / DHEA-S ratio, the more serious the risk of this problem. Moreover, multiple regression analysis showed that the independent risk factor for sarcopenia was a serum cortisol/DHEA-S ratio ≥ 0.2. Sarcopenia is a type of muscle loss that occurs with aging and/or immobility. Immunity and Cortisol DHEA Ratio In addition, an increase in the cortisol / DHEA-S ratio with age (Phillips et al. 2007) is associated with immune dysfunction and the risk of infection in the elderly due to the fact that DHEA-S enhances immunity. However, cortisol has an inverse immunosuppressive effect (Buford and Willoughby 2005). It is also worth adding that DHEA-S is known for its antioxidant properties. Metabolic Syndrome Various studies have shown that both cortisol and DHEAS are related to metabolic syndrome, and type 2 diabetes. While high cortisol concentrations are associated with an increased risk of metabolic syndrome, high DHEA-S levels appear to be protective. By far, the strongest associations were observed for the cortisol / DHEA-S ratio. According to observations, the higher the coefficient, the greater the risk of metabolic syndrome. This ratio is also strongly associated with four of the five components of metabolic syndrome. Alzheimer’s Disease The cortisol / DHEA-S ratio may also be crucial in Alzheimer’s disease. For example, some studies have found a link between the cortisol / DHEA-C ratio and a decrease in hippocampal volume. It is worth saying that a decrease in the volume of the hippocampus is one of the early diagnostic signs of Alzheimer’s disease. This finding has been confirmed by other studies, observing the relationship between cortisol / DHEA-S and hippocampal atrophy (HA). For example, such a direct relationship was observed in patients with Cushing’s syndrome. Moreover, HC volume partially recovered following treatment-induced cortisol decrease. However, not all studies support this association within normal cortisol levels in healthy people. To sum up, the ratio of cortisol / DHEA sulfate can reflect: Assessing Exercises DHEA (Aldred et al. 2009; Cumming et al. 1986) and DHEA-S (Tremblay et al.