Alpha Linoleic Acid is an “essential” fatty acid, meaning that your body cannot make it and you must obtain it from your diet. Alpha Linoleic Acid is by far the most abundant polyunsaturated fatty acid in most human tissues.
Dietary sources of alpha-linolenic acid include:
- Flaxseeds and flaxseed oil
- Canola (rapeseed) oil
- Soybeans and soybean oil
- Pumpkin seeds and pumpkin seed oil
- Perilla seed oil
- Tofu
- Walnuts and walnut oil
Note: Alpha-linolenic acid is not the same as alpha-lipoic acid, an antioxidant that helps the body turn glucose into energy. This can be confusing because both alpha-linolenic acid and alpha-lipoic acid are sometimes abbreviated as ALA.
Further notes:
- A modest dietary consumption of ALA (1.2-2g) is recommended
- Do not take alpha-linolenic acid supplements if you have prostate cancer or are at high risk for getting prostate cancer (e.g., you have a father or brother with prostate cancer). There is some evidence that alpha-linolenic acid might increase the chance of getting prostate cancer.
Names and Abbreviations of the Omega-6 and Omega-3 Fatty Acids:
| Omega-6 Fatty Acids | Omega-3 Fatty Acids | ||||
|---|---|---|---|---|---|
|
Linoleic acid |
LA |
18:2n-6 |
α-Linolenic acid |
ALA |
18:3n-3 |
|
γ-Linolenic acid |
GLA |
18:3n-6 |
Stearadonic acid |
SDA |
18:4n-3 |
|
Dihomo-γ-linolenic acid |
DGLA |
20:3n-6 |
Eicosatetraienoic acid |
ETA |
20:4n-3 |
|
Arachidonic acid |
AA |
20:4n-6 |
Eicosapentaenoic acid |
EPA |
20:5n-3 |
|
Adrenic acid |
22:4n-6 |
Docosapentaenoic acid |
DPA (n-3) |
22:5n-3 |
|
|
Tetracosatetraenoic acid |
24:4n-6 |
Tetracosapentaenoic acid |
24:5n-3 |
||
|
Tetracosapentaienoic acid |
24:5n-6 |
Tetracosahexaenoic acid |
24:6n-3 |
||
|
Docosapentaenoic acid |
DPA (n-6) |
22:5n-6 |
Docosahexaenoic acid |
DHA |
22:6n-3 |
References:
- https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4350958/
- https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4224228/
- https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3185114/
- https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5768068/
- https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2943064/
- https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2943064/
- https://epi.grants.cancer.gov/diet/foodsources/fatty_acids/table6.html
- https://www.spandidos-publications.com/br/8/1/69
- https://www.ncbi.nlm.nih.gov/pubmed/15890766
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