Harvard Health Content API

A 2023 study of 1.5 million people found that those who had uncontrolled high blood pressure or diabetes prior to getting COVID-19 had increased risks for COVID complications (such as hospitalization or being on a ventilator), compared with people whose high blood pressure or diabetes was well controlled.

A 2023 study of 93,000 people ages 65 or older found that those who said they had hobbies reported having better health, more happiness, fewer depression symptoms, and higher life satisfaction, compared with those who said they didn’t have hobbies.

In a 2023 Harvard Medical School study of more than 216,000 people (followed for up to 36 years), those who reported eating the most red meat had a 62% higher risk of developing diabetes, compared with those who reported eating the least red meat each week.

In contrast to previous studies, several new investigations have been unable to find clear evidence that people who take a drink a day are less likely to develop heart disease than people who don’t drink. The new evidence doesn’t negate past studies; it simply must be weighed against past studies. And while findings suggest that moderate drinking may offer some heart benefits, drinking is not recommended for the purpose of achieving those unproven benefits. Excessive drinking—averaging three or more drinks a day—causes multiple health problems, including heart problems.

It takes more than a weekly session with a personal trainer to maximize exercise benefits. Personal trainers recommend that people exercise in between training sessions; do strength training at the beginning of a workout; alternate the muscle groups that get a workout; challenge each muscle group with a variety of exercises; stretch regularly; eat a healthy diet to fuel the body; and exercise purposefully, with a strategic approach that moves them closer to their exercise goals.

For the first time, consumers can order a blood screening for Alzheimer’s disease. The screening looks for two types of brain proteins, one of which is associated with Alzheimer’s. Doctors have concerns about the screening: it’s not FDA-approved, there’s little information about its accuracy, and it can take a few days to speak with a doctor about the results. By comparison, an official Alzheimer’s diagnosis involves a comprehensive evaluation of someone’s current and past health problems, physical and neurological exams, family history, blood tests to rule out hidden conditions that might be causing memory problems (such as vitamin B₁₂ deficiency), and imaging tests.