This is a reprint of a post on a yahoo group which contains important information about a question a mother had about a dark grit in the stool that was fine, sand like and sticky. The grit seemed to be present when the child was eating yogurt on the SCD diet.
Kathleen - I do believe the grit in the stool is probably calcium oxalate crystals, but I think your son is producing the oxalate internally. I've been paying attention to oxalates for over three years now and the symptoms I've seen, in my kids and others, just can't be explained by dietary intake.
There is an enzyme in the body that can produce oxalates when pH drops (becomes more acidic), with no genetic mutation needed, and I believe that enzyme is churning out oxalates in kids with autism.
First place you should start with the K2 protocol is actually the baking soda baths. The skin can absorb sodium bicarbonate, which goes into the bloodstream and neutralized a little bit of acid. Use 8 cups per bath. Baking soda is cheap - you can buy 12-pound bags at big discount stores like Costco or Sam's Club for under $5 a bag. Be very diligent about giving your son a baking soda bath every single day (sometimes my son gets them TWICE a day) so that you can push his pH up closes towards normal. About every 3rd or 4th day, use 2 cups of sea salt in the tub instead of the baking soda.
Oral magnesium is next - for a 4-year-old you want to aim for 400-500 mg per day in divided doses. Also get a bottle of Klaire Labs Bi-Carb Formula capsules, which are sodium and potassium bicarbonate, and give your son one per day, also in divided doses. Let him have as much dietary salt as he wants.
The liquid phosphorus helps the kidneys clear acid from circulation. Give about 2 teaspoons per day, in as many divided doses as you can because this particular supplement works much more effectively if it's given in many small doses throughout the day.
I have puzzled for a long time over why SCD yogurt has that effect on the children, and here is my hypothesis: the kids are clearly having great difficulty in maintaining acid-base balance because of chronic acidity. I think the cells have a lot of acid stored in them, acid which the body
couldn't excrete and had to get out of circulation. The phosphorus in the yogurt is upregulating cellular detoxification, which means the cells start increasing the amount of acid waste they move into circulation - and the kidneys can't get it out so pH drops, triggering responses such as oxalate production. pH control is highly dependent on having adequate amounts of minerals available, so the more minerals (especially lithium, sodium, potassium and magnesium which are in Groups I and II on the periodic table) and bicarbonate (a base which neutralizes acid) you can get into your child the more you assist his body in dealing with excess acid.
Just about every child on this list who has been tested has elevated calcium, which is wreaking havoc with the nervous system. Calcium is a bioactive mineral that can trigger overstimulation of the neurons. The kids just DON"T need calcium. The body is pulling calcium and phosphate from the bones in an attempt to buffer acidity, and the excess calcium is causing a number of the symptoms we call "autism." Your child is far better off without the supplemental calcium.
For the record, I don't think that chelation is a high priority. My observation, in my son and others, is that it makes acidity worse in the kids, and neither DMSA nor DMPS is particularly effective if the kidneys are acidic (which they are). The acid-base problem did not arise because of mercury and it will not go away even if all the mercury is removed. From a physiological perspective, it's far more important to get pH under control than it is to chelate.