Sleep Archive

Solo-agers are people 50 and older who aren't married, don't have children, and live alone. Many of them don't have people they can count on to help them with household tasks or manage their ongoing care, if needed. While solo aging can offer perks, it can also leave older adults vulnerable to deteriorating mental and physical health. Solo-agers may count on help from siblings, neighbors, friends, community groups, or paid help. They can build their support by setting up a buddy system, staying in regular touch with loved ones, and tapping senior programs.

In a 2025 randomized trial of about 1,000 people (ages 50 or older), followed for four years, those who took 2,000 international units of vitamin D₃ per day showed cellular signs that suggested they were aging more slowly compared with people who did not take the supplement. It’s unclear if this benefit would continue from taking daily pills longer than four years. Scientists do know that taking vitamin D₃ supplements is important for people with osteoporosis or with vitamin D deficiency (as determined by a blood test).

Scientists are trying to create a vaccine that would protect people against all different strains of the influenza (flu) virus. These vaccines are being designed to target parts of the flu virus that don't change regularly and so are consistent across all strains. The perfect vaccine would also prevent symptoms (since current vaccines help prevent hospitalization and death, but not symptoms), and its effects would last for a lifetime. While such a vaccine is still many years away from reality, improved flu vaccines are expected in the meantime.

With influenza virus, a new vaccine must be developed each year to adapt to the virus's changing structure.

Arm tenderness is the most common side effect after vaccination. The injection stretches muscle fibers and triggers an immune response, causing discomfort. People can counter pain by moving the injected arm afterward and applying a cool compress or ice pack.

Essential tremor is marked by involuntary shaking of one or more body parts, such as the hands, arms, legs, or head. Avoiding caffeine and stress and getting plenty of rest can be helpful. Several medications are available to ease the symptoms.

Taking 2,000 International Units of supplemental vitamin D₃ daily may help slow the cellular aging process, according to a 2025 study.

While many health symptoms resolve quickly on their own, others linger and make people wonder if they need to see a doctor. Symptoms that warrant a doctor's visit include drawn-out cold symptoms such as fatigue, cough, and low-grade fever; a fever lasting more than four days; unexpected symptoms when starting a new medication or after surgery; certain digestive problems; and new or worsening mental health issues.

Spray-on sunscreens can be as effective as lotion-based sunscreens for protecting skin from harmful ultraviolet light. People using sunscreen sprays should make sure skin appears wet and shiny where they've sprayed and rub the product in before it dries.