Orange juice is full of vitamin C which supports the immune system by increasing production of white blood cells that are on the front lines. But there’s more going on behind the scenes. Along with other nutrients, new research shows this old-fashioned remedy gets to the core of what leaves your body defenseless in the face of infection.

If you’ve gotten a COVID-19 vaccine, you may think that it’s completely safe to resume normal life despite the rising infection rates, thanks to aggressive variants. But if you’re an older adult, you need to keep your guard up. Immune response from the vaccines seem to have a caveat — and it all has to do with age.

Just when we thought we had the all-clear, we’re hesitating again. And the biggest reason for that hesitation right now is the new Delta variant our country is dealing with. That’s why we’re breaking down what experts at Yale Medicine are telling us about the variant to try to clear up some of the questions.

More than a year later most of us are breathing a sigh of relief. Yes, we’re still cautious but we’ve turned the corner. But what if you were infected? There’s a good chance you could be dealing with long Covid. Because healthcare workers and researchers are finding it’s much more common and may last even longer than anyone thought.

Aging is due in part to varying rates of immune system decline that trigger chronic inflammation. People with healthy immune systems are able to fight off this inflammation to some extent, but those whose aren’t as strong will age faster and be more prone to frailty and disease. Since inflammation is treatable, all we’ve needed was a way to measure it.

Antibiotic resistance is leaving us more and more vulnerable to serious disease. But overuse of antibiotics isn’t the only thing that’s causing this health crisis. Other common medications you may be using could make antibiotics less effective when you might need them most.