BAGEL
While a bagel may seem like a safe morning staple, according to health expert, author, and certified nutritionist Samantha Heller, white grains, especially when ingested without protein, can cause a spike in blood sugar. Your body reacts by pulling your blood sugar down, causing you to feel lethargic. So while that morning bagel may fill you up and give you a momentary sense of well-being, you’ll regret it an hour later when you’re tired, cranky, and you forget the client’s name (again) on your 11 a.m. conference call.
HOT DOGS
Mass-produced packaged meats, such as salami, bologna, and hot dogs (basically anything you could procure at a gas station) are loaded down with nitrates, a common food preservative. According to Christine Simmons of HeathAssist.net, nitrate-containing foods can cause migrane headaches, as well as tension headaches—that lovely head-in-a-vise feeling. If you've gotta get your cured meat on, look for organic or locally sourced options.
CUPCAKE
The cupcake craze shows no sign of ebbing—any birthday, engagement party or office celebration will inevitably trot out these frosted sugar-bombs. According to Susan Biali, M.D. in Psychology Today, carbohydrate-rich foods enable tryptophan to enter the brain, which produces serotonin, a neurotransmitter that, simply put, makes us feel great. But the surge of energy caused by the combo of white flours and white sugars is followed by a major crash, as well as mood swings and agitation, making for not-so-happy birthdays.
WHITE CHOCOLATE
According to Men’s Health editor
David Zinczenko, white chocolate is a sweet imposter. It’s not
technically chocolate, as it lacks the cocoa solids to stimulate
feel-good boosters like serotonin. So you get all of the sugar (and
subsequent sugar crash) of real chocolate with none of the
benefits. If you’re going to indulge, stick with the real thing—the
darker the better.
FAST FOOD FRIES
French fry, mon cherie! You tempt me with your crisp saltiness, tender insides, and heavenly golden sheen, but you’re bad for me, and even worse for my mood. Not only are fast food fries loaded with refined carbohydrates, sugars, and a whopping salt content, health expert and "Recipe Doctor" columnist Elaine Magee, MPH, RD reveals that many contain “bad fats” (saturated and trans fats), which take hours to digest, putting you into a sluggish food coma. If you must indulge (and I understand if you must), make your own! 
COCKTAIL HOUR
While a drink or a glass of wine at the end of the day releases the brain chemical beta-endorphin for a momentary rush of buzzy contentment, remember that this feeling is fleeting. Leading toxicology expert and author Sherry Rogers, MD warns that alcohol is a depressant. The more alcohol you drink, the more it depresses your mood, interferes with cognition, and causes reckless or aggressive behavior. You know that sad, surly person at the end of the bar shouting at the TV? Don’t be that person.
TRIPLE SHOT FLAVORED LATTE
I know, pumpkin latte season is here with gingerbread lattes soon to come, but caffeine makes you feel energized by triggering the pituitary gland to produce adrenaline, and if you drink too much too quickly, this sharp increase in adrenaline can increase anxiety. According to WebMD, side effects of too much caffeine also include headache, agitation, chest pain, and ringing in the ears. The added sugars in flavored drinks will give you a momentary rush, but in an hour or so you’ll start to feel like it's January 1st.
