Who Avoids It: Taylor Schilling

Why: This next diet no-no might come as a shock, considering you can't go anywhere without hearing about another celebrity juice cleanse. While fresh squeezed and cold-pressed juices do offer some nutritional benefits, Los Angeles based nutritionist Ilana Muhlstein, R.D. with Explore Cuisine, says that, in general, juice cleanses are the antithesis of healthy.

"I find them to be ridiculous, expensive and totally nonsensical," Muhlstein says. "They don't include fiber from the fruits and vegetables, which is where the bulk of the benefits are held. They leave people starving and deprived, and can cause a super unhealthy relationship with food."

In fact, "Orange Is the New Black" star Taylor Schilling, point-blank told People, "I don't roll with the juice cleanses. I will never do that. I like chicken and beans." Goglia supports Schilling's stance, and adds that because juice is so low in fiber, it rapidly penetrates the bloodstream, causing an immediate rise in blood sugar, which will ultimately result in a loss of energy and lethargy in a matter of minutes.

Who Avoids It: Gwyneth Paltrow

Why: If you're vegetarian or vegan, soybeans might be a primary source of protein for you, but according to Goglia you're not getting a whole lot of bang for your buck. "There are amino acids (the building blocks of protein), but those amino acid structures within soybeans are difficult for us to absorb," Goglia explains. "First and foremost, soy is a starch and sugar [two things you want to avoid when trying to slim down]. It's high in estrogen, and it's been linked to numerous cancers, (primarily breast cancer) in both men and women. Any products high in estrogen like wheat and soy are unfavorable choices."

Who Avoids It: Cameron Diaz

Why: You may want to sit down for this one. When it comes to losing weight, increasing energy and giving yourself a runway-worthy figure, bread, pasta, muffins, pastries and cereals are all on the no-no list. While the sweet treats should come as no surprise, you might find yourself asking why whole-grain bread is out. "Breads, muffins and bagels are yeast mold, gluten bond," Goglia explains. Meaning, they are inflammatory foods that slow your metabolism and stimulate digestive distress, like gas, bloating and slow digestion.

Who Avoids It: Courtney Cox

Why: Some of you are probably thinking: Hey, what gives? Fruit is healthy! While you are 100 percent correct there, dried fruit is a different story. "Dried fruit is a source of sugar and fiber, only there is no additional water for transport," Goglia says. "Just like juice, dried fruit is highly caloric and spikes insulin levels, which gives you an immediate energy boost followed by a quick crash." Goglia also adds that dried fruit can be disruptive to your digestive tract, causing bloating and gas for many people with irritable bowel syndrome. So, if you're craving fruit, stick to the real stuff.

Who Avoids It: Jessica Alba

Why: Most conventional meat found at the supermarket contains something called transglutaminase. "Also called 'meat glue,' transglutaminase is an enzyme used to bind proteins to make uniform portions of fish fillets, tenderloins, etcetera, Goglia says. "When sprinkled on a protein, such as beef, it essentially acts like a superglue, binding pieces together with near invisible seams." So that beef tenderloin you're thawing for dinner could actually be from several cows glued together, not just one cow. "Since food manufacturers are not required to disclose what they've done, you think you're buying a prime cut when in fact you're paying top dollar for glued-together bits and pieces, that would've otherwise been discarded or sold for a fraction of the cost," Goglia explains. Scary, huh?

So why is this concerning for our diets, or more importantly our health? Because it's the most efficient way of spreading and contracting contaminated meat. "When an outbreak does occur, its difficult if not impossible to discern the source of the contamination if there's chunks of meat from multiple cows now combined," Goglia says.

It may not be a weight-loss secret, but it certainly is important for your health. To avoid a 100-in-1 deal on your meat, Goglia recommends always reading labels, and asking questions about where your meat is sourced. Stick to the organic and grass- fed meat, and try to purchase from local butchers as much as you can.