Few Americans were aware of the dangers of industrial farming and processed food before Michael Pollan published his best-selling books “In Defense of Food” and the “Omnivore’s Dilemma.”

A hero to the locavore and organic movements, Pollan has never shied away from expressing his opinions on what to eat, where to eat and the proper way to raise and harvest what we eat.

In his new book “Cooked," Pollan urges more Americans to home-cook their meals. Cooking, he says, will lower obesity rates and re-connect individuals with “the material world.”

Related: Michael Pollan: Home Cooking Will Solve America's Obesity Epidemic

Eating the right foods are as important as eating foods that are not genetically modified, Pollan argues in the accompanying clip. Genetically modified organisms (GMOs) are “plants or animals created through the gene splicing techniques of biotechnology, or genetic engineering,” according to The Non-GMO Project, a nonprofit organization that tests food products for GMOs.

"This experimental technology merges DNA from different species, creating unstable combinations of plant, animal, bacterial and viral genes that cannot occur in nature or in traditional crossbreeding," it says.

Soybeans, corn, cotton, canola, zucchini, summer squash and sugar beets are high-risk of being GMO. Dairy and animal products also expose consumers to GMO crops because animals are fed a diet rich in corn and grains. About 70% to 80% of processed foods sold in the U.S. are made with genetically engineered ingredients.

Sixty-four countries around the world, including Japan, South Korea, China, Australia, New Zealand, Thailand, Russia and European Union member states, have significant restrictions or outright bans on the production and sale of GMOs.

Last November California voters rejected a ballot initiative that would have required all food to be labeled as GMO or non-GMO. Opponents of the measure, including Monsanto (MON), Dupont (DD), Dow Chemical (DOW) and PepsiCo (PEP), raised more than $45 million to defeat the proposed labeling law.

Supporters of labeling say that GMO foods damage the environment and present serious health risks like organ failure. Genetically modified seeds have also become resistant to pests and invasive weeds. Last week Sen. Barbara Boxer (D-CA) and Rep. Peter DeFazio (D-OR) introduced a bill that would require the labeling of GMO ingredients.

The Genetically Engineered Food Right-to-Know Act would force food manufacturers to label fruits, vegetables, processed foods and seafood as genetically altered. The Food and Drug Administration has allowed genetically altered foods to be sold without labeling since 1992 and does not require safety studies of such foods.