b'molecules in carvacrol team up with the water in your body to create heat that kills bacteria. When pitted against a variety of common infectious diseases, oregano oil was shown to kill Salmonella, E. coli, and several types of the Staphylococcus bug. Oregano also boasts anti-inflammatory powers. During one randomized, double-blind clinical trial involving 75 people who suffered from chronic sinus infections, a nasal spray containing oregano was found to be even more effective than the steroid medication fluticasone. And unlike the drug, the oregano spray was both safe and well tolerated. Vitamin Cis the best-known immune stimulant on the planet. Studies show that phagocytes and Defend with Vitamin D T-cells accumulate vitamin C and Promising research suggests that boosting youruse it to perform their tasks. Its so vitamin D levels might help ward off common cold- effective that when Israeli doctors gave weather illnesses like the flu. In fact, the activethe vitamin to a group of competitive form of vitamin D, listed on supplement labels asswimmers with upper respiratory D3, appears to temper the damaging inflammatoryinfections, 47 percent of those taking a response of some white blood cells while alsodaily dose of C experienced less severe boosting immune cells production of microbe- symptoms and a more rapid recovery fighting proteins. One 2020 study in the journalthan those who didnt supplement. Nutrients found that maintaining adequate vitaminSeveral studies also suggest that D levels can protect against the flu and other viralvitamin C may keep colds at bay. For respiratory illnesses. For those who do get sick,those who do succumb to the sniffles, the researchers suggested boosting vitamin Dincreasing vitamin C may shorten the levels to reduce the severity of the infection. number of days under the weather.An earlier clinical trial involving 167 schoolchildren found that supplementing with vitamin D during cold and flu season can dramatically reduce flu risk. It can even be effective for kids with asthma who are typically at a higher risk of upper respiratory infections. Supplementing with vitamin D may also help you live longer. Researchers at the University of California, San Diego, have found that people with low levels were twice as likely to die prematurely compared to those with higher blood levels.8OPTIMAL IMMUNIT Y'