>>12305083mercola.com is a good health resource, he breaks down why soi, even organic, is bad for you.
https://search.mercola.com/results.aspx?q=onions#stq=onionsVitamin C is also key. Pills are mediocre, you want unprocessed C like acerola berry powder. I started taking powdered C for heart health and my debilitating arthritis went away, that was 7 years ago.