Soy isn't good for anyone. It is so high in phytoestrogen that menopausal women take it to replace the hormones they're no longer producing. In men, it reduces testosterone and causes breast growth. It reduces progesterone and causes ovarian cysts in women.
This is completely untrue.
One of my special interests is nutrition. Phytoestrogens are plant analogues of mammal oestrogen. The body cannot use them like it can estradiol or other forms of mammal oestrogen. What phytoestrogens do is bind to the oestrogen receptors in your body. Since they cannot be utilised as oestrogen, this has the effect of limiting uptake of oestrogen in your cells.
For this reason, soy is
protective against hormonally-influenced diseases such as breast cancer.
Actual things that produce excess oestrogen in your body:
- human fat cells
- beer and alcohol
- animal meats
- milk from lactating mammals (not a surprise, I hope)
This is why you don’t find old beer-swilling dudes flat-chested. LOL. They get gynaecomastia from their beer, meat and dairy-rich diets - not their obsessive love of tofu.
If you have a lot of the above list in your diet, you should definitely (barring actual allergies) be eating more soy foods - ideally tofu or tempeh type soya - to help to limit your oestrogen uptake from those sources.
In the spirit of being informative, it’s also a good idea to limit or eliminate the intake of dairy in children. Due to the exceptionally high oestrogen content, which is higher than it would have been pre-intensive farming due to cows regularly being both pregnant and lactating on modern farms, it has been linked to early menarche (periods) in girls and higher risk of testicular cancer in boys’ later lives. Early menarche is also linked to various reproductive cancers in later life.
Please don’t spread this misinformation about phytoestrogens. It’s simply untrue - a simple misunderstanding by those who are not scientifically literate getting all uppity about the word ‘oestrogen’ being in something. If they’d looked at the science and understood it, this rumour wouldn’t exist.