Onions decrease Estradiol by 60%, which is why the Jews don't want you to eat it, take a look at the effects of Estradiol from the wikipedia page:
"Estradiol is responsible for the development of female secondary sexual characteristics such as the breasts, widening of the hips, and a feminine pattern of fat distribution in women and is important in the development and maintenance of female reproductive tissues such as the mammary glands, uterus, and vagina during puberty, adulthood, and pregnancy.[7] It also has important effects in many other tissues including bone, fat, skin, liver, and the brain."
"The development of secondary sex characteristics in women is driven by estrogens, to be specific, estradiol.[11][12] These changes are initiated at the time of puberty, most are enhanced during the reproductive years, and become less pronounced with declining estradiol support after menopause. Thus, estradiol produces breast development, and is responsible for changes in the body shape, affecting bones, joints, and fat deposition.[11][12] In females, estradiol induces breast development, widening of the hips, a feminine fat distribution (with fat deposited particularly in the breasts, hips, thighs, and buttocks), and maturation of the vagina and vulva, whereas it mediates the pubertal growth spurt (indirectly via increased growth hormone secretion)[13] and epiphyseal closure (thereby limiting final height) in both sexes.[11][12]"
Tldr estradiol effects;
>manboobs
>wide hips
>female fat distribution
>smaller bones
>shorter height (epiphyseal closure)
To counter these, you must eat at least 1 raw onion a day, which decreases these effects massively.
