Inclusion Criteria:

• Age ≥ 18 years old.
• May be on oral therapy (including metformin) or insulin.
• Most recent HgbA1c level measuring between 6.5 -10 within the last 3 months.
• May be on stable (> 4 weeks) statin dose or no statin therapy.
• Willing to sign informed consent and stay on current medical regimen.
• Does not use regular dietary fiber supplements; has not had any psyllium containing products in the previous 30 days; is willing to refrain from taking any other fiber containing supplement products during the study.
• Has not used systemic steroid agents in the last 30 days.
• Able to participate fully in all aspects of the study.
• Have access and ability to utilize text messaging or email.

Exclusion Criteria:

• Unwilling/unable to participate.
• Comorbid inflammatory bowel disease, celiac sprue, nephrotic syndrome, severe cholestasis (e.g., primary biliary cirrhosis), or history of bariatric surgery/bowel resection.
• Alcohol use in excess of 14 drinks/week.
• Allergic reactions to psyllium or wheat dextrin.
• Has participated in a clinical drug study or used an investigational new drug during the previous 30 days.
• Self-Report of known or suspected pregnancy or immediate plans (within 3 months) of becoming pregnant.
• Currently breastfeeding.
• Has a known history of any condition or factor judged by the investigator to preclude participation in the study or which might hinder adherence.
• Anticipated or recent major changes in diet or exercise routine.
• Anticipated colonoscopy prep during 3 months of study period.