How do I know if my intestinal flora is imbalanced?

We are all exposed to chemicals in the air. And even if you currently buy only organic, you've probably been exposed to chemicals on the food you eat. Other factors: Excess food processing. Food additives. Stress. Negativity. Mental or emotional trauma. Too much oil or heavy foods like meat. Hormones and other additives in meat. Antibiotics. Unnatural vitamins and supplements. 

All these affect our probiotic balance and thus, virtually all of us can benefit from a product like Probiotics, with 29 different strains of SBO's.