They might be better for the planet, but are plant-based burgers good for you?

By Lisa Drayer, CNN

Updated 2102 GMT (0502 HKT) August 14, 2019

Plant-based burger patties made by Impossible Foods contain a genetically modified version of heme, an iron-containing molecule from soy plants, which is what gives them a meaty flavor.
Photos: The top meat substitutes
Plant-based burger patties made by Impossible Foods contain a genetically modified version of heme, an iron-containing molecule from soy plants, which is what gives them a meaty flavor.
Hide Caption
1 of 10
Vegan soy bratwurst has become a popular choice in Germany, allowing meat-lovers to cut meat from their diets without necessarily changing them too much. Meat-free diets have come a long way, with a variety of alternative options.
Photos: The top meat substitutes
Vegan soy bratwurst has become a popular choice in Germany, allowing meat-lovers to cut meat from their diets without necessarily changing them too much. Meat-free diets have come a long way, with a variety of alternative options.
Hide Caption
2 of 10
Fried cabbage with bread crumbs -- the vegan version of traditional German schnitzel -- looks just like its meat counterpart but with healthier ingredients.
Photos: The top meat substitutes
Fried cabbage with bread crumbs -- the vegan version of traditional German schnitzel -- looks just like its meat counterpart but with healthier ingredients.
Hide Caption
3 of 10
Organic tofu is the base for many vegan and vegetarian meals.
Photos: The top meat substitutes
Organic tofu is the base for many vegan and vegetarian meals.
Hide Caption
4 of 10