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The FDA relaxes restrictions on blood donation

While the FDA rules for blood donation were revised twice in the last decade, one group — men who have sex with men — continued to be turned away from donating. Now new, evidence-based FDA rules will focus on individual risk rather than groupwide restrictions.

When should you worry about fainting?

While the cause of fainting often is something minor, fainting also can be a sign of a serious underlying medical problem.

Top 7 reasons you have a headache

Headaches can have many triggers from allergies to stress, or even hunger. Understanding headache triggers can help you avoid one in the future. Here's a look at the most common triggers for each kind of headache.

Having one chronic condition can boost the risk for others

Many chronic conditions seem to be related. Examples include obesity, high blood pressure, type 2 diabetes, high cholesterol, and heart disease; hearing loss and dementia; obstructive sleep apnea and high blood pressure; various autoimmune diseases; and obesity and joint problems. People with chronic conditions should ask their doctors about the risk for associated diseases.In some cases, they should have certain health screenings to check for them. In other cases, additional screening isn't automatic.

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