My personal opinion is that it is not normal to have a child not talking at this age. I know, you will get a bunch of moms telling you their kid didn't say anything and then one day said a speech at 3.
I can only give my personal opinion based on my own family, my observations and my studies.I have done years of medical research because of illness with my own children. I wanted answers.
First I will tell you that the "normal" of today is so far left of what normal used to be. 20 years ago a child that wasn't speaking at 2 was NOT COMMONPLACE and it was certainly considered an ISSUE and developmental problem, even in the child/family medical books of the day.
Today, the perameters have become very lenient. What would have been considered illness 20 years ago is considered in the 'normal range' today or not really worried about at all. Doctors and even some mom's who don't know any different don't question it. And just about every family has an unwell or developmentally delayed child. Anyone who has been around long enough and has a good enough memory can remember growing up and maybe knowing ONE, only one ill or "different" child in the whole school. Now they are everywhere and in every family. Something is wrong. Why are all these children getting illnesses, diseases, not hitting milestones, and being put on drugs and in therapy?
Toxins, heavy metal poisoning and bacterial/fungal overload paired with major nutritional deficiencies and vitamin poisoning are at the heart of the issue. Did you know that mercury poisoning has the same symptoms as autism- line item for line item? I appeal to those willing to lend an ear that the poisoning of our children has been "covered up" with a clinical name of autism. There is no reason that standard medical doctors should not be testing each and every autistic child's mercury blood levels! But they don't. Delays are a possible pointer that there is something affecting the central nervous system. And the central nervous system is very sensitive to toxins, bacterias, yeasts and metals.
Research to find out how to detox heavy metals. I know that Magnesium and Alpha Lipoic acid help chelate metals out. There are other substances also, but they are very hard on the body. Waioria NCD Zeolite is also especially good for lead/mercury and is said to be safe even for children. Iodine helps chelate metals out and protects the thyroid. Vaccines are loaded with toxins, bacterias, and metals. If you decide you want to keep vaccinating, at least make sure that you give the child magnesium (citrate or malate) and vit C a few days before to the day of the vaccine. Then dose with NCD zeolite and magnesium after the vaccine for 5-7 days to remove mercury.
From my research of clinical trials and medical papers, I also consider the Iron supplements inside of formulas too high. Doctors are telling mothers to add an iron supplement on top of that. Iron is a heavy metal. It does not leave tissues easily, but builds up to toxic levels in small children. 30% of pediatric death is due to iron poisoning, and many of those were being dosed under the supervision of a doctor. Much of the constipation of today in babies/toddlers in from the extra iron, but instead of removing the iron supps, the docs will give a prescription for Mirilax- the same compound found in antifreeze.
Vitamin D dosing has also become a lenient and dangerous practice. Vit D can be toxic as well. And people are taking supplements like they are going out of style. Only people with severe illnesses who don't process it normally, removed thyroids, and the like, should be taking vit D, and with a doctor testing calcium blood levels while on it. Indeed, many of the early clinical trials (which helped form public acceptance of putting vit D in dairy products) were done on people in sanitariums who never saw the light of day, unbeknown to most. We get our entire need for vit D in 10 minutes out in the sun, OR 2 cups of dairy products. Plus we store vit D. So all the irradiated lunchmeats, nuts, and produce that now also have vit D are overload. Then people take vitamin D supplements on top of that!
I say this to make a point- do not give multi vitamins to your kids. They are severely lacking in what you really need (magnesium, b vits, iodine, EFAs) and are high in stuff the average person should not be taking. (iron, calcium, vit D, folic acid) in which extra amounts can contribute to disease.
I think intervention to chelate metals could help some children to talk and I think it is worth a go.