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But when cholesterol levels are not balanced, problems can occur. Over the past two decades, prescriptions for testosterone therapy have greatly increased. We have previously demonstrated that TRT in older, hypogonadal men confers changes to the protein composition of HDL without altering HDL-c concentrations or its cholesterol efflux capacity suggesting a neutral effect with regard to HDL-related cardiovascular risk. HDL particles facilitate reverse cholesterol transport by accepting cholesterol from lipid-laden macrophages in peripheral tissues and transporting it to the liver for excretion in bile. However, in an analysis in older men from the Framingham heart study , no association between plasma lipids and T concentrations was observed. These findings prompted a prospective look at the relationship between plasma T levels and dyslipidemia through longitudinal studies. Most of these studies have also demonstrated an inverse relationship between T levels and both plasma triglycerides 32–34,36 and total cholesterol 32,34.
The hypothesis that T adversely impacts CVD risk is largely based upon interventional trials that indicate that exogenous androgens suppress HDL-C in men, even when given in physiologic doses . HDL-C was inversely related to chronic disease, including CVD, diabetes and hypertension. Similar to other cross-sectional analyses of middle aged men 8, 9, in the present study of men enrolled in the MMAS, we found a positive relationship between HDL-C and TT. Controlling for WC or BMI did not alter these results (data not shown). Analogous to the results for TT, a man with 0.2 nmol/L higher fT would be expected to have 6% higher HDL-C than a man with similar WHR, cardiac risk factors and lower serum fT.
In many men who have cholesterol in the borderline high category, healthier habits can bring the numbers down to normal. The first treatment of choice for high cholesterol is adopting a healthier lifestyle. Researchers are interested in that idea because testosterone is partly made from cholesterol.
Indeed, PCSK9 inhibitors display no detrimental effect on the testosterone level compared with statins in the previous study . Excessive testosterone has deleterious effects on the cardiovascular system. In the present study, we have demonstrated that testosterone deficiency decreased LDLR in hepatocytes, while its mRNA level remains unchanged.
Later, larger studies did not find the same level of danger. Injections are linked with bigger drops in HDL cholesterol, while gels, patches, and pellets seem to have gentler effects. Testosterone pellets are small solid pieces of hormone inserted under the skin, often in the hip or buttock area. Some research shows little to no effect on cholesterol, while others show HDL reduction similar to injections. The liver processed these older forms directly, which had toxic effects. However, newer forms, such as testosterone undecanoate capsules, are used in some countries and are becoming more available. Studies suggest that gels and creams may have a milder effect on cholesterol compared to injections.
Another study found that testosterone deficiency increased serum testosterone levels, however, the underlying mechanism behind the phenomenon is still unclear. However, while many people view cholesterol as "bad" for health, there is good cholesterol—namely high-density lipoprotein (HDL) cholesterol—that helps remove bad cholesterol (LDL) from the body. This waxy substance can build up in your arteries and lead to heart disease, stroke, and other health problems.
Again, the key factor seems to be the steady hormone levels. This steady pattern seems to have less impact on how the liver makes or clears cholesterol. Some studies even show small improvements in triglyceride levels with gels.