Preventive care Archive

Processed foods are those that have been changed from their original form. A minimal level of processing may mean the food has simply been chopped and frozen or that inedible parts have been removed. At the next level, processed foods have a few added ingredients. Foods with even more processing are called "ultra-processed" foods. Ultra-processing usually means that the original foods are not recognizable, and include additives such as preservatives, oil, sugar, salt, coloring, and flavoring. If there are more than a few ingredients listed on a food label, that food is probably ultra-processed, which is bad for health.

Nutrient deficiencies are uncommon with a broad and varied diet. But aging, hormonal factors, or diet can leave women short of four key vitamins and minerals: vitamin D, iron, vitamin B₁₂, and calcium. Various tests can reveal nutrient deficiencies, including blood panels. Vitamin D and fish oil supplements may help prevent autoimmune diseases. Multivitamins are usually unnecessary, except in cases where age, pregnancy, digestive challenges, or certain medications interfere with the ability to get adequate nutrition.

People can get sunburned even with sunscreen on, particularly if they use old sunscreen or certain drugs and skin care products that leave skin vulnerable. People should stay out of the sun at midday, wear a hat and sunglasses, and frequently apply sunscreen with SPF 30 or higher.

Acetaminophen (Tylenol) is often recommended for pain relief in people with high blood pressure because most other options can raise blood pressure. A 2022 study suggests acetaminophen might sometimes have a similar effect.

Knuckle cracking doesn't "crack" a joint. The sound comes from gas bubbles bursting in the fluid inside the joint. While knuckle cracking is mostly harmless, other types of noises or the presence of pain can indicate a more serious joint problem.

A new study suggests a high-fiber diet may protect against dementia. In a group of about 3,700 older adults, those who consumed the most fiber (about 20 grams daily) had the lowest rates of dementia, and those who ate the least fiber (8 grams daily) had the highest rates.

Doctors advise that the best ways to lower risk for heart disease is to exercise, eat right, and adopt healthy lifestyle habits, like stress management, social engagement, and adequate sleep. But what do cardiology doctors do to practice what they preach? Three Harvard cardiologists share their heart-healthy habits and how they've overcome the same challenges their patients face.

Tacos filled with white fish or black beans, topped with vegetables and salsa, is an easy-to-prepare Mexican-inspired meal.

A traditional Nordic diet featuring whole grains, berries, canola oil, fish, and low-fat dairy may improve heart-related risk factors, even if people following the diet don't lose weight.

Some portable electronic devices—including Apple AirPod charging cases and certain smartphones—contain strong magnets that can interfere with the function of an implantable cardioverter-defibrillator.