Home > Newsletters > Daily: Love or hate Earth Hour? > Daily Dose: This is why your vanilla or cinnamon flavoured e-cigarette is toxic > Health-in-Motion Updated 29 September 2015 Don't eat this! Feeling sick? There are some foods that can actually make your symptoms worse. Foods to avoid: Alcohol: Not only does alcohol have a bad effect on your immune system, it can also lead to dehydration. Dairy: Although it is still controversial whether dairy generally worsens mucous production, most doctors still advise against it when you’re sick. Sugary foods: Sugary foods suppress the immune system. Junk food: When you’re sick, your body needs healthy, nutritious food to keep it going and fight the virus. Coffee: Coffee and other caffeinated drinks can deprive your body of fluids, and when you’ve got a cold you need to stay hydrated. 0 More: Daily Dose: This is why your vanilla or cinnamon flavoured e-cigarette is toxicHealth-in-Motion advertisement Other news Lifestyle Lung scans of smokers with COPD can reveal heart disease Lifestyle Here are the unexpected places where germs live Diet and nutrition For cod's sake, eat more seafood if you can Parenting Single father: 'I speak to my daughter about sex' Medical Drinking coffee might help with this skin condition Medical Exercising with allergies – what you should know From our sponsors Dementia and Incontinence: what you need to know Tell-tale signs you need a mattress upgrade Keen to win a R2 000 voucher? Good health begins in your gastrointestinal tract Live healthier Gut health » Can't lose weight? Blame it on your gut Our nutrition experts weigh in on why gut health is such an important factor in weight loss, on World Obesity Day. Sleep better » Yes, there is such a thing as too much sleep A new study confirms that too little sleep can impair your brain, but interestingly, too much sleep is also a problem.