You've probably read news reports about sudden deaths in dentists and elsewhere. Well, this happens because of homocysteine and anesthesia. Who's forgotten that homocysteine is a metabolite—an amino acid—a byproduct of the metabolism of another amino acid, methionine. Its problem is that in high concentrations, it's toxic to blood vessels. Homocysteine damages blood vessels, causing platelets to migrate into them, leading to a clot, which then leads to ischemia and death.
The thing is, dentists and other "doctors" don't give a damn what it is... And they approve procedures/operations under anesthesia without checking this homocysteine...
Nitrous oxide is used for anesthesia, for example, in dentistry. Of course, it's probably wrong to call this gas anesthesia, but that's not the point. It's even given to children when fillings are being done; it makes the child more alert and less sensitive to pain, while remaining conscious. This type of anesthesia is considered safe. Evidence-based medicine has approved it.
But nitrous oxide inhibits the enzyme methionine synthase (MTR), leading to a sharp rise in homocysteine. In a healthy person, this simply stresses the blood vessels (depending on the gas dose), but in people with polymorphisms in the MTHFR/MTRR/MTR genes, it increases the risk of thrombosis and death, especially in children. This explains the sudden deaths you've read about in the news.
Looking at DNA tests, I often see these polymorphisms, in one person. Of course, not everyone will experience sudden death. It depends on the genotype and the combination with other polymorphisms, and the dose of anesthesia... But someone might be unlucky!
Therefore, if you have children, don't give them nitrous oxide until you're sure they don't have homocysteine problems . This is a cheap blood test for homocysteine levels, and/or testing the gene pair (MTHFR/MTRR/MTR) for polymorphisms.
Those who have already identified the problem should take the supplements shown in the photos in the post, and do so for life, in courses with breaks. If you ignore the homocysteine problem, don't be surprised by hemorrhoids, varicose veins, strokes/heart attacks, spider veins, and angiomas on the skin...
