Cooking with Broccoli. Cooking methods can impact the nutrient content and health benefits of broccoli. Boiling can leach up to 90% of the valuable nutrients from broccoli, while steaming, roasting, stir-frying, and microwaving tends to preserve the nutrients. History of Broccoli
a meta analysis is a statistical analysis that combines the results of multiple scientific studies
Meta-analysis of Level 3 studies . Level 4: Case series. a report of multiple patients with the same treatment, but no control group or comparison group; Level 5: Case report (a report of a single case) Expert opinion; Personal observation