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IGF-1 does a lot of behind-the-scenes work for our body, and it can be confusing to some to understand how it affects our health. There are a number of benefits associated with IGF-1, as it can assist with things like muscle building, weight loss, and more. But in order to receive the benefits that come with IGF-1, your IGF-1 levels need to be optimal. As is the nature of IGF-1, our bodies reduce the production of this hormone as we age. This is important since people of different age levels require different levels of IGF-1 in order to be considered optimal. In this post from the Nutronics Labs blog, we’ll discuss what can be considered optimal IGF-1 levels by age of the user.
Normal IGF-1 Levels For Different Age Groups
The benefits of IGF-1 are most noticeable physiologically when the hormone is found at the optimal level for your age. When humans are first born, our IGF-1 levels are low, but start to substantially increase during childhood and into puberty. By the time the 2nd or 3rd decade of life is reached, IGF-1 levels begin to steadily decline. This decline continues until about age 70, at which point IGF-1 levels are virtually undetectable. See the chart below for a visualization of how IGF-1 levels drop as people age:
Studies have shown that having low IGF-1 levels can be associated with an increased risk of disease and mortality.* On the other hand, studies of elderly men (approximately 75 years of age) with high levels of IGF-1 have shown increased risk of cardiovascular events.** This makes having optimal IGF-1 levels particularly important, especially as we age. For younger people, IGF-1 levels become critical when it comes to fitness, like being able to recover between workouts and put on muscle more efficiently. Having optimal levels of IGF-1 for your age under the age of 70 is a great way to stay In shape or reach fitness goals of all kinds. Below, see a chart of what’s considered to be optimal IGF-1 levels based on the age of the user:
|
Age: |
Optimal IGF-1 Levels (ng/ml): |
|
21 to 30 |
158 to 230 |
|
31 to 40 |
135 to 220 |
|
41 to 50 |
121 to 193 |
|
51 to 60 |
98 to 150 |
|
61 to 70 |
85 to 140 |
|
71 to 80 |
85 to 95 |
|
80 and older |
85 to 90 |
Keeping your IGF-1 levels within these ranges based on your age comes with a number of benefits like improved recovery time between workouts, a stronger immune system, improved joint function, and much more. Learn more about the benefits of IGF-1 in the Nutronics Labs blog.
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*Ranke MB, Osterziel KJ, Schweizer R, et al. Reference levels of insulin-like growth factor I in the serum of healthy adults: comparison of four immunoassays. Clin Chem Lab Med 2003, 41:1329-1334.
**Carlzon D, Svensson J, Petzold M, et al. Both low and high serum IGF-1 levels associate with increased risk of cardiovascular events in elderly men. J Clin Endocrinol Metab 2014, 99:E2308-2316.
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