Chronic fatigue can become a serious problem for aging men. With the decline of crucial hormones like HGH, or human growth hormone, testosterone, DHEA and IGF-1, comes lower energy levels and even depression. To make matters worse, levels of the female hormone estrogen and the stress hormone cortisol can compound the problem. Age-related hormone decline can not be entirely prevented, but some choose to supplement with natural substances that prevent hormonal fluctuations from decimating energy levels. Consult with your doctor before taking any dietary supplements.
Creatine monohydrate can increase a man's energy and fight fatigue in several ways. This amino acid-like substance acts as a fuel source for explosive movements, whether you are lifting weights in the gym or just moving furniture. In addition, creatine increases levels of anabolic or muscle building hormones like 1GF-1, an active form of human growth hormone that play important roles in youthful energy and anti-aging, according to the "Muscle & Fitness" article "Top Ten Supps You Can't Live Without" by Jim Stoppani, PhD.
The extract form a plant known as the arctic rose, Rhodiola rosea increases the level of ATP, or the energy source adenosine tri-phosphate, in muscle cells. In addition, it supports healthy levels of the hormones HGH, IGF-1, dopamine, testosterone and thyroid hormone, according to Stoppani. Rhodiola acts as an adaptogen, combating physical stressors and suppressing secretion of the catabolic hormone cortisol. according to "Life Extension Magazine," rhodiola may also exhibit heart-protecting, anticancer and anti-aging benefits.
Longjack goes by many names, including Eurycoma longifolia and tongkat ali. According to Jerry Brainum, author of "Natural Anabolics," longjack functions to increase testosterone levels in males. Age-related decline in testosterone can cause muscle loss, depression and fatigue. In addition, longjack has shown to decrease levels of the aforementioned stress hormone cortisol. High levels of cortisol can exacerbate symptoms of aging by cannibalizing muscle and promoting abdominal weight gain, according to "The Cortisol Connection" by Shawn Talbott.
The fact that L-arginine converts to the systemic gas NO, or nitric oxide, in the human body has become well known in the fitness world, says Jose Antonio in "Power Pills." However, you may not know that an increase in NO production leads to better fat burning, more blood flow for healthy erections and faster muscle building. Arginine-AKG has become the most commonly used form of the amino acid. Taking it with the antioxidant pycnogenol, the amino acid L-citruline and pomegranate extract may further enhance its benefits, says Jordana Brown in "Everything You Need to NO."