Goal

Metabolic & Weight

6 products graded for this goal, sorted by strength of evidence.

Alpha-Lipoic Acid

B

A dual water/fat-soluble antioxidant with solid evidence for diabetic neuropathy and blood sugar support, and a reasonable safety profile.

Metabolic & WeightBrain & Cognitive

Berberine

B

A plant alkaloid with strong clinical evidence for lowering blood sugar, often compared to metformin in efficacy for glycemic control.

Metabolic & WeightHeart & Cardiovascular

Infrared Sauna

B

Infrared saunas show meaningful cardiovascular and recovery benefits, with emerging but less conclusive evidence for detoxification and skin health.

Skin & Anti-AgingMetabolic & Weight

Iodine

B

An essential trace mineral required for thyroid hormone production — deficiency causes hypothyroidism and is common in regions without iodized salt, but excess can also disrupt thyroid function.

Metabolic & WeightEnergy & Fatigue

Selenium

B

An essential trace mineral critical for thyroid function and antioxidant defense — beneficial for those with low selenium status, but excess carries risk.

ImmuneMetabolic & Weight

Sulforaphane

B

Broccoli-derived compound that activates the Nrf2 antioxidant pathway, with emerging evidence for metabolic and neuroprotective benefits.

Metabolic & WeightBrain & Cognitive

When the evidence changes, we’ll tell you.

One short email a month. New A-grades, downgraded claims, and reader questions.

Medical disclaimer. The information on this site is provided for educational purposes only and is not intended as medical advice. It does not constitute a diagnosis, treatment plan, or recommendation for any specific health condition. Always consult a qualified healthcare professional before making changes to your supplement regimen, diet, or lifestyle — especially if you are pregnant, nursing, taking medications, or managing a medical condition.

Affiliate disclosure. Some links on this site are affiliate links. If you purchase through them, we may earn a small commission at no extra cost to you. This never influences our editorial assessments — products are graded solely on the evidence.