Despite what the supplement industry would have you believe, unless you are an overweight, older female, the commonly available steroid precursors (or the natural foods that claim to boost them) don't really have any effects on testosterone.
There are three precursors (Dehydroepiandrosterone or DHEA, A'dione, and A'diol) that are hormones used in endogenous (...
The long-term impact of testosterone on women's health is still not clarified enough, so it's not easy to predict them exactly.
Some common side-effects of high testosterone level are acne and increased oiliness of the skin and hair. High level of testosterone con also lead to infertility and are commonly seen in polycystic ovarian syndrome.
No, masturbation does not decrease testosterone levels in the blood.
Relevant studies cited in the linked article:
Fox CA, Ismail AAA, Love DN, Kirkham KE, Loraine JA. Studies on the relationship between plasma testosterone levels and human sexual activity. J Endocrinol. 1972;52:51–58.
Batty J. Acute changes in plasma testosterone levels and their ...
What are the benefits of high testosterone in men?
what benefits does high testosterone actually entail?
Mental health discussion would be interesting too, if there's any
I think it is important to recognize that levels of the testosterone hormone in the male body decrease naturally in men with age.
The level ...
Other than the post and the website you mentioned, here are a few more natural testosterone boosters, some of them being substances, and others being lifestyle changes or things-to-do:
1) In this study, pomegranates were found to increase salivary testosterone levels by an average of 24% (though this was averaged over both men and women, in just men, the ...
I really recommend you go to a medical doctor for these issues. I am all about evidence-based alternative medicine, but in general, Homeopathy has very poor evidence for being able to treat most things. Another Meta-analysis this year of homeopathy have turned up empty on a lot of things.
From Wikipedia referencing this article:
A 2017 systematic ...
The following comprehensive scientific sources do not even mention any relationship between turmeric/curcumin and gynecomastia:
Turmeric, Natural Medicines Comprehensive Database, komen.org
Turmeric, National Center for Complementary and Integrative Health
Curcumin: A Review of Its’ Effects on Human Health, PubMed, 2017
Curcumin, Examine.com, 2015
There seems to be no clear and direct evidence for this.
But a few angles might be worth exploring:
Molecular Dynamics (MD) simulations found curcumin to be a stable inhibitor of aromatase (Singh et al 2016).
The prepubertal gynecomastia in males and breast hypertrophy in females are conditions of aromatase excess syndrome (Metwalley and Farghaly 2013).
It sounds like testicular pain like that could be due to contraction of the cremaster muscle, which essentially controls testicle height. Its main role is to help regulate temperature in the scrotum by controlling how close the testicles are to the body. This is important because a very precise temperature is needed to make sperm (just ...
I found a 2017 article pointing specifically to a case of AAS usage associated with a Bilateral Patellar Tendon Rupture, which mentions:
we suppose that combined AAS and exercise
can increase tendon stiffness, predisposing to the rupture
Additionally, one of this paper's sources references a 2016 study in which they point out that:
According to this 2016 Nature Review article (which cites the article from your link):
Androgens have been show to reduce immune response in a variety of studies. For example:
In vivo exposure to testosterone reduces NK cell activity in mice 
In vivo and in vitro exposure to testosterone decreases TLR4 expression on macrophages in mice