Leaky Gut Syndrome is very common, but most often misdiagnosed and labeled one of many "designer" conditions that is accompanied by designer drugs. It is a condition that evolves when candida overgrowth in the gut has been unmanaged for too long. The fix is diet.
The link between mercury poisoning and Hashimoto's Disease is not well documented, but it is very common for those with mercury fillings to have thyroid troubles. Even though your doctor might not support this view, it is curious that more and more people are on thyroid meds. The increase is due to something.
Assisting laryngitis with onions is a home remedy that floats the internet. Since I woke up barely able to speak, I thought I'd give it a try. Recommendations online vary, but all are very simple. I went very basic.
Create a potion out of minced onion and a bit of water boiled for about 5 minutes. How much of each probably does not matter much, but I used about 2-3 tablespoons of minced onion in a 1/4 cup of water.
Thinking it could not hurt, I added a teaspoon of honey to the hot mixture.
Since honey is antimicrobial, antibacterial and antiseptic it has no choice but to help the situation.