Another point I’d like to make for people worried about a link between high testosterone and prostate cancer is that it just doesn’t make sense. Prostate cancer becomes more prevalent in men as they age, and that’s also when their testosterone levels decline. We almost never see it in men in their peak testosterone years, in their 20s for instance. We know from autopsy studies that 8% of men in their 20s already have tiny prostate cancers, so if testosterone really made prostate cancer grow so rapidly — we used to talk about it like it was pouring gasoline on a fire — we should see some appreciable rate of prostate cancer in men in their 20s. We don’t. So, I’m no longer worried that giving testosterone to men will make their hidden cancer grow, because I’m convinced that it doesn’t happen.
The results showed that heart rate wasn’t affected by either caffeine alone or any combination of caffeine and geranamine. But blood pressure and RPP were higher, depending on the dosage. Specifically, systolic blood pressure rose by 20 percent and diastolic blood pressure went up 17 percent, along with a 9 percent increase in RPP, with the combination of 250 milligrams of caffeine and 75 milligrams of geranamine an hour after the subjects took it. The catecholamines, epinephrine and norepinephrine, were not affected. What’s interesting about this is that unlike ephedrine, the catecholamines were not involved in the rise in blood pressure. Nor was the heart rate affected. So what did cause blood pressure to go up with the greatest dose? That remains for future research to determine.
Do not consider WebMD User-generated content as medical advice. Never delay or disregard seeking professional medical advice from your doctor or other qualified healthcare provider because of something you have read on WebMD. You should always speak with your doctor before you start, stop, or change any prescribed part of your care plan or treatment. WebMD understands that reading individual, real-life experiences can be a helpful resource but it is never a substitute for professional medical advice, diagnosis, or treatment from a qualified health care provider. If you think you may have a medical emergency, call your doctor or dial 911 immediately.