Leucine: The anti-aging amino acid  (And how Active Stem can help you get more of it)

You’ve probably read about amino acids before and just dismissed them.

Maybe you saw a jar of them at your local pharmacy – you know the one with the beefed up muscle-man’s arm on the label – and thought, “These aren’t for me. This stuff’s for fitness buffs.”

And that’s true… for decades fitness enthusiasts have used branched-chain amino acids to boost muscle strength and improve their performance.1,2,3

But, don’t be too quick to dismiss amino acids. They might actually help your body stay younger, longer.

Muscle loss is real

When you begin to lose muscle, you run the risk of incurring injuries or certain disabilities. And as you get older, your muscles’ anabolic responses to your nutritional intake change. This can often cause nutrient deficiencies which play a significant role in muscle loss.

Turns out, your muscles might not be able to metabolize protein as efficiently as they could when you were younger. But, recent research shows older muscle is somehow still able to respond to amino acids –  especially branched-chain amino acids like leucine. These branched-chain amino acids seem to have the ability to acutely stimulate muscle protein synthesis in older individuals.4

Now, everyone loses muscle as they age, it’s just a natural effect of getting older. And there’s a lot you can do to help yourself –

  • Eat the right diet
  • Stay active
  • Avoid a sedentary lifestyle
  • Incorporate resistance exercises into your daily routine

But, you don’t have to go it alone. Science has given us so many ways to find our healthiest selves at any age. One such helpful advancement is the use of branched-chain amino acids – specifically leucine.

So, what are branched-chain amino acids?

Well, to understand branched-chain amino acids, you’ve got to understand glycogen. Now, you know that fat is the primary source of stored energy in your body, right? But there’s a second energy storage system you’ve got made up of what’s called ‘glycogen stores.’

Muscle glycogen is the substance our muscle cells convert into glucose. And, when your glycogen stores run low, your body relies on branched-chain amino acids for fuel instead.

But, your body can’t produce them on its own , so you’ve got to turn to your diet or certain supplements in order to get them.

And when get the right amount, they can help support your muscle growth, repair damage to your muscle, and even reduce muscle soreness.


So, leucine is the #1 choice for bodybuilders because it plays the biggest part in muscular health. Not only can leucine help you build muscle, it can really lend a hand in recovery after strenuous exercise.5\

Also, it’s a dietary amino acid with the capacity to directly stimulate muscle protein synthesis. It’s great to add to your diet … especially when you’re struggling with your protein getting enough protein to begin with. Leucine supplementation could improve muscle protein synthesis in response to lower protein meals.

Some foods with a higher leucine contents are:

  • Walnuts
  • Pistachios
  • Wild-caught fish
  • Pasture-raised chicken
  • Grass-fed beef

Try to add these foods to your diet if you happen to notice muscle loss or atrophy. Or, to make an even bigger impact, try supplementing with Active Stem.

Why Active Stem?

Active Stem is so much more than just an amino acid supplement. That’s because Active Stem is a cutting edge formula that combines 5 incredible ingredients – including leucine! In fact, leucine has never been combined with these other powerful ingredients before…

  • Green Tea Extract
  • Vitamin D3
  • L-carnosine
  • Blueberry Extract

The formula is vegetarian, lactose-free, gluten-free, and has no additives or preservatives.

In Conclusion

You don’t have to sit by and watch your body grow weak or soft just because you’re getting a little older. Give your body what it wants what it needs to stay young and healthy. Active Stem can help support your health, your longevity, and your physical performance.

The sooner you do get more leucine, the more likely you’ll be to help maintain your muscle mass, support your body’s muscle growth, and improve your endurance. It’s time to live your healthiest life.


  1. Harper AE, Miller RH, Block KP. Branched chain amino acid metabolism. Annu Rev Nutr. 1984; 4:409-54.
  2. Sharp CP, Pearson DR. Amino acid supplements and recovery from high-intensity resistance training. J Strength Cond Res. 2010 Apr;24(4):1125-30.
  3. Kreider RB et al. ISSN exercise & sport nutrition review: research & recommendations. J Int Soc Sports Nutr. 2010 Feb 2;7:7.
  4. Fujita, S., & Volpi, E. (2006). Amino Acids and Muscle Loss with Aging. The Journal of Nutrition, 136(1 Suppl), 277S–280S.
  5. Doi, Masako et al. “Isoleucine, A Potent Plasma Glucose-Lowering Amino Acid, Stimulates Glucose Uptake In C2C12 Myotubes”. Biochemical and Biophysical Research Communications 312.4 (2003): 1111-1117. Web.
  6. Casperson, S., Sheffield-Moore, M., Hewlings, S. and Paddon-Jones, D. (2017). Leucine supplementation chronically improves muscle protein synthesis in older adults consuming the RDA for protein.
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