Caffeine is a central nervous system stimulant found in chocolate, tea, soft drinks and coffee. It works by binding to the molecule adenosine in the brain, which increases energy and concentration. Although caffeine has been linked to several benefits, concerns have been raised about its impact on the precursor hormone DHEA. However, research shows that caffeine intake doesn’t influence DHEA levels.
DHEA
Dehydroepiandrosterone, or DHEA, is a hormone synthesized in your body and secreted by the adrenal gland. It’s a precursor to other hormones, including the female hormone estrogen and the male hormone testosterone. DHEA levels normally drop after the age of 30 and people suffering from AIDS, Type 2 diabetes and anorexia are likely to experience low DHEA levels, according to MayoClinic.com.
No Effect
Caffeine intake might not decrease DHEA levels, according to a study conducted by researchers at Dartmouth Medical School. Scientists assigned healthy participants with a history of caffeine consumption to 400 mg of caffeine or a placebo daily for seven days. DHEA levels were measured before and after the treatment. At the end of the study, which was published in the December 2007 issue of “Metabolism,” researchers found no differences in DHEA levels between the two groups.
Additional Research
Similar findings as the previous study were published in the June 2010 issue of “Cancer.” Researchers at Brigham and Women’s Hospital and Harvard Medical School studied the relationship between caffeine intake and hormone levels in premenopausal and postmenopausal women. They discovered that caffeinated coffee intake had no effect on DHEA levels in either group of women; however, decaffeinated coffee was associated with a decrease in DHEA levels in both groups.
Caution
Caffeine intake seems to have no impact on DHEA levels. Keep in mind that excess caffeine consumption can lead to insomnia, fast heartbeat and muscle tremors, according to MayoClinic.com. If you experience any of these side effects, reduce your caffeine intake.
References
- MayoClinic.com: DHEA
- Metabolism: Metabolic and Hormonal Effects of Caffeine: Randomized, Double-Blind, Placebo-Controlled Crossover Trial
- Cancer: Relationship Between Caffeine Intake and Plasma Sex Hormone Concentrations in Premenopausal and Postmenopausal Women
- MayoClinic.com: Caffeine: How Much is Too Much?
