Youth may be idealized but that doesn't mean older people aren't getting busy - they just don't take pictures on their cell phones and post them to Instagram. A new survey found that people in the early years of marriage have sex more frequently, and sexual activity tapers off over time, but then a rebound occurs after 50 years.

Despite the claims of people selling books on ascension into being robots or diet fads, you are not going to live forever.

It used to be life was truly short and now we are in a period where life is much longer but after the age of 65 it is not better, it is instead a slow steady decline toward death.

The goal cannot be to try and live forever, nature has built in too many biological landmines to control that, but to live healthier until we do die. First, we'd have to agree on what this 'successful' aging would look like, without wellness psychobabble.

I read a sad story in the news recently. A Baltimore mother died a week after giving birth to two twin sons, leaving her husband to raise the two boys on his own. 

As tragic as the news was, the reason that it made national headlines was that the mother was 56 years old. Initial reports indicate that her death was the result of a bowel obstruction, not because of the pregnancy, but a lot of the coverage of this story has focused on one question: how old is too old to give birth?
Osteoporosis is the most common type of bone disease, it is characterized by bones becoming so weak and brittle a simple cough can cause a fracture.  About half of all women over the age of 50 are at risk. 

It is preventable but for those who have it, existing treatments for this pathological bone loss mean inhibiting osteoclasts (bone-destroying cells) to limit bone degradation - but by doing so, they also prevent bone formation since it is stimulated by the presence of these very same osteoclast cells.
Like most things, age is the biggest risk factor for complications in pregnancy. When the expectant mother is over 35,  the risks associated with overweight, smoking, gestational diabetes and pre-eclampsia also become higher, according to a register-based analysis from the University of Eastern Finland.

Advanced maternal age has been a growing trend over the past few decades. In Finland, the authors note, 20 percent of mothers in 2013 were over 35 years old. Fertility drugs and IVF have made motherhood possible at almost any age and increased popularity of 'egg freezing' is likely to increase the numbers - but there are some risks that increase after the age of 35 and have nothing to do with the embryos themselves.

One of the ways to study longevity has been engineering fruit flies whose genes can be turned on and off by a synthetic hormone, allowing detailed studies of the effects of single genes on life span. They do that because many of the genes have close relatives in humans.

Unfortunately, the hormone used to perform the studies turns out to be anything but neutral, according to a new study.  If so, it means studies on the genetic roots of aging will need a second look, because a common lab chemical can extend the life span of female fruit flies by 68 percent.

Your closest friends are advocates and see the best in you, but they are also observers of the personality traits that could send you to an early grave, according to a new paper.

The authors say that that your personality at an early age (20s) can predict how long you will live past 75 years - and that close friends are usually better than you at recognizing these traits. 

Male participants seen by their friends as more open and conscientious ended up living longer. Female participants whose friends rated them as high on emotional stability and agreeableness also enjoyed longer lifespans, the study in Psychological Science found.

A study has found that reducing expression of the Myc gene - found in the genomes of all animals, ranging from ancestral single-celled organisms to humans - significantly increased the healthy lifespan of laboratory mice, the first such finding regarding this gene in a mammalian species.

Myc is a major topic of biomedical research and has been shown to be a central regulator of cell proliferation, growth, and death. Though animals cannot live without it, in humans and mice too much expression of the protein that Myc encodes has been closely linked to cancer, making it a well-known but elusive target of drug developers.
If someone won't move around for 20 minutes a day, can anything more be done to help people get off the couch?

Too much sitting has been linked to increased risk of chronic diseases such as diabetes, heart disease and some types of cancer. Current guidelines suggest adults do 150 minutes of moderate intensity activity a week, but more than a third (35.6%) of adults worldwide don't do that. And the proportion of time spent being inactive rises with age: from 55% (7.7 hours) at 20-29 years, to 67% (9.6 hours) in those aged 70-79 years.
There is a lot of talk about increasing longevity but 50 years of increasing frailty, doctor visits and overall decline is not really an improvement over 30 years of it.

A new study shows that by focusing on the genetics involved in increasing longevity, we won't be helping people much at all; genes that increase longevity may not significantly increase healthy lifespan.

A study of long-lived mutant C. elegans by scientists at the University of Massachusetts Medical School shows that the genetically altered worms spend a greater portion of their life in a frail state and exhibit less activity as they age then typical nematodes.