: MuscleTech 100% Mass Gainer (Vanilla) had no detectable lead in CR's tests.

When evaluating a gainer, look beyond the "total calories" on the front of the bag. : Lean Muscle Gain : Aim for a

: Look for "Informed Choice" or "GMP" certifications to ensure the product is free from banned substances and accurately labeled. 2. Safety & Heavy Metal Testing

ratio (e.g., Rule 1 Mass Gainer offers 250g carbs to 40g protein).

A critical Consumer Reports investigation found that some mass gainers contain detectable levels of heavy metals like lead.

: Some products like Owyn Pro Elite and Transparent Labs Mass Gainer (Sweet Vanilla) reached over 85% of CR's "level of concern" for lead per serving. 3. Top Recommended Products Protein Powders and Shakes Contain High Levels of Lead

: Avoid products where simple sugars are the main carb source. Prefer complex carbohydrates like maltodextrin or blended oats for more sustained energy.