My brother started taking the Spirulina and Chlorela combination as suggested in www.chlorellafactor.com and experienced extreme constipation.
I call it extreme constipation because he was unable to have a bowel movement for 3 days.
I had to rush him to the hospital because he was having difficulty breathing. The x-rays show he was constipated with sh*t backed up so much it was pressing on his lungs. Thus he is unable to breath freely.
This theory turned out correct, they put some suppositories in him and when he dumped a handful of sh*t he suddenly felt much better and could breath normally.
Scary huh? The lesson is, when you make a change in your diet, you should monitor your bowel movement. Any 1 day without a bowel movement is a cause for alarm. My anti-constipation protocol is 2 tablespoons of virgin coconut oil. Plus drink 2 glasses of room temperature water.