Omega-3 fatty acids are important for heart health. Diets that do not include fish and eggs are generally low in active forms of omega-3 fatty acids. Canola oil, soy oil, walnuts, ground flaxseed and soybeans are good sources of essential fatty acids. However, because conversion of plant-based omega-3 to the types used by humans is inefficient, you may want to consider fortified products or supplements or both. 

^ Jump up to: a b c Forrest, Jamie (December 18, 2007). "Is Cheese Vegetarian?". Serious Cheese. Serious Eats. Archived from the original on March 18, 2018. Retrieved March 18, 2018. Some vegetarians are OK eating cheeses made with animal rennet, but many will seek out ones made with vegetarian rennet, especially since the latter are quite prevalent nowadays.


In addition, animal agriculture is a large source of greenhouse gases. According to a 2006 report it is responsible for 18% of the world's greenhouse gas emissions as estimated in 100-year CO2 equivalents. Livestock sources (including enteric fermentation and manure) account for about 3.1 percent of US anthropogenic GHG emissions expressed as carbon dioxide equivalents.[208] This EPA estimate is based on methodologies agreed to by the Conference of Parties of the UNFCCC, with 100-year global warming potentials from the IPCC Second Assessment Report used in estimating GHG emissions as carbon dioxide equivalents.
Ultimately, weight loss for the long-term requires some short-term behavior change and healthier habit formation. That's why we created our Good Housekeeping Nutritionist Approved Emblem, which exists to help turn smart food choices into healthier eating habits. All GHNA foods and drinks make it easier to find — and eat — good-for-you foods without additional time, effort, and cost. We target the lifestyle-related factors that make healthier eating hard, and find simple but creative solutions that actually work! Look for the emblem on labels wherever you shop for food!
Environmental vegetarianism is based on the concern that the production of meat and animal products for mass consumption, especially through factory farming, is environmentally unsustainable. According to a 2006 United Nations initiative, the livestock industry is one of the largest contributors to environmental degradation worldwide, and modern practices of raising animals for food contribute on a "massive scale" to air and water pollution, land degradation, climate change, and loss of biodiversity. The initiative concluded that "the livestock sector emerges as one of the top two or three most significant contributors to the most serious environmental problems, at every scale from local to global."[207]
To get the most out of a vegetarian diet, choose a variety of healthy plant-based foods, such as whole fruits and vegetables, legumes and nuts, and whole grains. At the same time, cut back on less healthy choices, such as sugar-sweetened beverages, fruit juices and refined grains. If you need help, a registered dietitian can assist you in creating a vegetarian plan that's right for you.
Omega-3 fatty acids are good fats that may help lower blood pressure, improve heart health, and stave off age-related dementia. There are two kinds. Most of the health benefits are linked to docosahexaenioc acid (DHA), found mainly in fatty fish, as well as fortified foods like eggs. If you don't eat either of these foods, you might want to consider a supplement. Pumpkin seeds, flaxseeds, walnuts, and canola oil are all good sources of alpha-linolenic acid (ALA), an omega-3 fatty acid beneficial for heart health.
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