(According to UltimatePaleoGuide.com)
First the good:
Any benefits from soy will be found in organic, unprocessed, and fermented forms.
The soybean is about 48% protein and, according to the PDCAA (Protein Digestibility Corrected Amino Acid), the soy bean is given a high protein quality score, meaning it is complete in the essential amino acids. The soybean is high in phytoestrogens, which may have a positive hormonal impact and help menopausal symptoms, the prostate, lower blood pressure, cholesterol, and diabetes.
Again, these benefits are seen when soy is consumed in small quantities from unprocessed andfermented sources such as tempeh, natto, and miso. If you are consuming soy, it should be primarily from those sources mentioned above, in small quantities, and in organic and fermented form.
Next the bad…
High consumption of soy phytoestrogens as been linked to:
- Increased risk of breast cancer
- Loss of bone mass
- Decreased sex drive
- Impaired thyroid function
- Increased body fat
- Impaired blood sugar control
To read the whole article, click here.
In summary, a little soy is ok. High consumption, probably not the best idea. Which leaves me feeling a little better about certain protein bars, that all seem to have a bit of soy in them. We aren’t gonna die from that. 🙂 But we shouldn’t be downing glasses of soy milk daily either. Balance in all things. You choose what works for your body. We leave judgement at the door…show up for your workouts and eat to the best for your body.