If you've eaten meat and animal products your whole life, you might think, why switch to a vegetarian diet? You've lived your whole life eating eggs, hamburgers, hot dogs, poultry, so why switch now?

There could be many reasons to switch. Start by looking in the mirror. Are you at a healthy weight? Do you look and feel good most of the time? Do you wake up energized? Or do you wake up tired and sluggish?

How is your general health? Is your blood pressure within a healthy range? Are your cholesterol and blood sugar ranges normal? If they're not, consider what you're eating on a daily basis.

How do you feel after eating? Do you feel energized, as if you've fed your body what it needs? Or are you tired and dragged out? Do you often need a nap after eating? Is that what food is supposed to do for us, make us tired and sleepy?

Not really. Food should nourish and feed the body and leave us energized and refreshed. The human body is a machine and needs fuel that keeps it running in peak condition. When we're fat, with high blood pressure, Type II diabetes, high cholesterol and other unhealthy conditions, it's like a car engine that hasn't been tuned or isn't running on the optimal type of gasoline it needs to run efficiently.

Your body is the same way. It needs the right kind of fuel to run at peak efficiency, and when you're eating high-fat meat, or meat that's been fed antibiotics throughout its life, that's simply not the kind of fuel the human body evolved to run on.

Try eating vegetarian for a week or a month. See if you don't feel different, more mentally acute and more physically fit and energized. At least reverse the portion sizes you've been eating, and make meat more of a side dish, if you can't stop eating meat altogether. Even that change can make a big difference in your overall health and well-being.

People have different motivations for eating a vegetarian diet. For many people, it's a health issue. They need to reduce their weight, bring down their blood pressure and cholesterol, manage their blood sugars. A vegetarian diet helps them do this.

For others, it's also moral and ethical decision not to eat animal products. Through the centuries, we've become accustomed to thinking of man as superior to all other animals on the planet. We use animals for food, clothing, shoes, belts or other accessories. We use them for scientific experiments. We discount their place on the earth and consider that animals are here to serve us and our needs.

PETA stands for People for the Ethical Treatment of Animals, and is an organization devoted to changing that mindset among humans. They are against using animals for food or for clothing, especially for what they consider the needless or particularly inhumane use of animals, such as killing or trapping them for their fur.

They are passionate about their cause. In their own words, PETA believes that animals have rights and deserve to have their best interests taken into consideration, regardless of whether they are useful to humans. Like you, they are capable of suffering and have an interest in leading their own lives; therefore, they are not ours to usefor food, clothing, entertainment, experimentation, or any other reason.

We are supposedly an evolved society. But how evolved can a society be that thrives on the suffering of animals? In his excellent book, When Elephants Weep, author Jeffrey Masson explores the emotional lives of animals and presents compelling evidence for it. As a species, we must begin to re-evaluate our place on this earth and where we fit in relation to every other creature that inhabits it. PETA believes this as well and is a passionate advocate for the rights of animals.