ANTI-AGING NUTRIENTS is your guide to nutrients which have been proposed to have a positive effect on slowing down human aging. Short reviews of these nutrients are included in this section. 

Of the various approaches to slow down the aging process, calorie restriction is considered the gold standard. As the Life Extension Foundation enters its twenty-fifth year, the scientific community, the government, and even the news media are slowly recognizing that our concept of extending life is in fact technically feasible. This change in perception represents an enormous transformation in how humans view their role in the universe. Although none of the therapies in this section have been proven to retard aging, there is suggestive scientific evidence that they significantly suppress damaging free radical and inflammatory reactions that are linked to underlying aging processes.

Aspirin 
The most common cause of disability and death in the United States is an abnormal clot that develops inside an artery to cause a heart attack (blocked blood vessel in the heart), or a stroke (blocked blood vessel in the brain). Aspirin has an immediate and lasting effect on blood platelets, making them less likely to clump together and making blood flow smoothly.

DHEA
 DHEA (dehydroepiandrosterone) is an adrenal hormone that is the precursor for steroid hormones such as testosterone and estrogen. DHEA declines precipitously with advancing age in both men and women. In 1981, the Life Extension Foundation introduced DHEA(dehydroepiandrosterone) to its members through an article that described the multiple benefits that this hormone might produce. However, the general public did not learn about DHEA until 1996, when the benefits of DHEA were touted by the news media and in several popular books. DHEA became credible to the medical establishment when the New York Academy of Sciences published a book entitled DHEA and Aging. This book provided scientific validation for the many life extending effects of DHEA.

Melatonin
Melatonin is a hormone produced by the pineal gland, which is located beneath the brain. Melatonin is a highly potent antioxidant, which has been described as the pacemaker of the aging clock in humans. It is released every night as part of our time-dependent biorhythms to help induce sleep and recuperation from fatigue. Published studies indicate the importance of maintaining youthful levels of melatonin to help protect against age-related degenerative diseases. 

Acetyl-L-Carnitine Arginate
The amino acid acetyl-L-carnitine boosts mitochondrial energy production through its ability to facilitate fatty acid transport and oxidation in the cell. Since 1995, Life Extension members have been supplementing with acetyl-L-carnitine and deriving the many benefits this form of carnitine has shown in published studies. With the discovery of acetyl-L-carnitine arginate the benefits of acetyl-L-carnitine can now be greatly augmented. Acetyl-L-Carnitine Arginate is a patented form of carnitine that stimulates the growth of neurites in the brain. Studies show that acetyl-l-carnitine-arginate stimulates the growth of new neurites by an astounding 19.5% (as much as Nerve Growth Factor itself). Acetyl-l-carnitine-arginate acts together with acetyl-l-carnitine to increase neurite outgrowth

Coenzyme Q10
Coenzyme Q10 (CoQ10) is an essential component of healthy mitochondrial function. It is incorporated into cells’ mitochondria throughout the body where it facilitates and regulates the oxidation of fats and sugars into energy. Aging humans have been found to have over 50% less CoQ10 on average compared to that of young adults. This finding makes CoQ10 one of the most important nutrients for people over 30 to supplement with. About 95% of cellular energy is produced in the mitochondria. The mitochondria are the cells “energy powerhouses” and many maladies have been referred to as “mitochondrial disorders.” A growing body of scientific research links a deficiency of CoQ10 to age-related mitochondrial disorders.

Lipoic Acid
Lipoic Acid is a highly potent antioxidant that counteracts reactive free radicals in the mitochondria, the power plants of cells where energy for all cellular activities is generated. Some scientists believe that mitochondrial free radicals play an important role in human aging, and have theorized that extra amounts of free-radical inhibiting compounds such as lipoic acid may be able to help slow aging. Lipoic acid is also effective in recycling other antioxidants such as Vitamin E back into their original form after they detoxify free radicals. There also is evidence that lipoic acid can reduce glycation damage due to excess glucose in the blood, which may be involved in aging. Lipoic acid consists of two different forms (isomers) that have vastly different properties. The “R” form is the biologically active component (native to the body) that is responsible for lipoic acid’s phenomenal antioxidant effect. The “S” form is produced from chemical manufacture and is not very biologically active. 

Carnosine
Carnosine is a multifunctional dipeptide made up of a chemical combination of the amino acids beta-alanine and L-histidine. It is found both in food and in the human body. Long-lived cells such as nerve cells (neurons) and muscle cells (myocytes) contain high levels of carnosine. Muscle levels of carnosine correlate with the maximum life spans of animals. Carnosine levels decline with age. Muscle levels decline 63% from age 10 to age 70, which may account for the normal age-related decline in muscle mass and function. Since carnosine acts as a pH buffer, it can keep on protecting muscle cell membranes from oxidation under the acidic conditions of muscular exertion. Carnosine enables the heart muscle to contract more efficiently through enhancement of calcium response in heart myocytes. Aging causes irreversible damage to the body’s proteins. The underlying mechanism behind this damage is glycation. A simple definition of glycation is the cross-linking of proteins and sugars to form non-functioning structures in the body. The process of glycation can be superficially seen as unsightly wrinkled skin. Glycation is also an underlying cause of age-related catastrophes including the neurologic, vascular, and eye disorders. Carnosine is a unique dipeptide that interferes with the glycation process. 

Green Tea Extract
What makes green tea extract such an important nutrient are the large volumes of published scientific findings that validate its multiple biological benefits. The most significant findings involve studies showing that green tea extract helps maintain cellular DNA and membrane structural integrity. Decades of research shows that green tea inhibits the development of undesirable cell colonies. The active constituents in green tea are powerful antioxidants called polyphenols (catechins) and flavonols. Several catechins are present in green tea and account for the bulk of favorable research reports. Epigallocatechin gallate (EGCG) is the most powerful of these catechins. EGCG functions as an antioxidant that is about 25-100 times more potent than vitamins C and E. One cup of green tea may provide 10-40 mg of polyphenols and has antioxidant effects that are greater than a serving of broccoli, spinach, carrots, or strawberries. Theoretically, the high antioxidant activity of green tea makes it beneficial for protecting the body from oxidative damage due to free radicals.

Fish Oil 
Studies on omega-3 fatty acids are so impressive that an agency of the National Institutes of Health published a report stating that fish oil can help reduce deaths from heart disease. The FDA itself states supportive but not conclusive research shows that consumption of EPA and DHA omega-3 fatty acids may actually reduce the risk of coronary heart disease. There are several mechanisms attributed to fish oil’s beneficial effects. The latest government report cites the triglyceride-lowering effects of fish oil on reducing heart and blood vessel disorders. Another beneficial mechanism of fish oil is to protect healthy blood flow in arteries.