They now know that a chemical that comes from a compound found in Broccoli offers a potentially new and potent weapon against the viruses that cause COVID-19 and the common cold.
I believe that to be true, and I suspect that cabbage is another. Mix them with vitamin D 3 and I suspect you will be a lot better off. Especially in this day and age.
And for other health related issues, all’s I can say is what I was taught many years ago.
Eat a varied diet that focuses on high-quality foods such as whole grains, nuts and fresh fruits and vegetables. The more colourful your plate is, the better.