Loneliness Can Impact Our Health
On top of the mental health ramifications, the physiologic effects of loneliness could have grave consequences over time. In observational studies, loneliness has been linked to higher risks for cancer and heart disease, and shorter lifespan. One third of Americans over 45 say they are chronically lonely.
Chronic loneliness changes how we think and behave, research shows. It makes us fear contact with others and see them in a more negative light, as more threatening and less trustworthy. Lonely people prefer to stand farther apart from strangers and avoid touch.
This is where MDMA-assisted therapies could potentially help, by easing these defensive tendencies, according to Dr. Woolley.
MDMA, Psychedelics, and Social Behavior
MDMA, or 3,4-methylenedioxymethamphetamine, is a hybrid between a stimulant and a psychedelic. In Dr. de Wit’s earlier experiments, volunteers given MDMA engaged more in communal activities, chatting, and playing games. They used more positive words during social encounters than those who had received a placebo. And after MDMA, people felt less rejected if they were slighted in Cyberball — a virtual ball-tossing game commonly used to measure the effects of social exclusion.
MDMA has been shown to reduce people’s response to other’s negative emotions, diminishing activation of the amygdala (the brain’s fear center) while looking at pictures of angry faces.
This could be helpful. “If you perceive a person’s natural expression as being a little bit angry, if that disappears, then you might be more inclined to interact,” de Wit says.
However, there may be downsides, too. If a drug makes people more trusting and willing to connect, they could be taken advantage of. This is why, Dr. Woolley says, “psychedelics have been used in cults.”
MDMA may also make the experience of touch more pleasant. In a series of experiments in 2019, researchers gently stroked volunteers ’ arms with a goat-hair brush, mimicking the comforting gestures one may receive from a loved one. At the same time, the scientists monitored the volunteers’ facial muscles. People on MDMA perceived gentle touch as more pleasant than those on placebo, and their smile muscles activated more.
MDMA and psychedelics boost social behaviors in animals, too — suggesting that their effects on relationships have a biological basis. Rats on MDMA are more likely to lie next to each other, and mice become more resilient to social stress. Even octopuses become more outgoing after a dose of MDMA, choosing to spend more time with other octopuses instead of a new toy. Classic psychedelics show similar effects — LSD, for example, makes mice more social.
Psychedelics can induce a sense of a “dissolution of the self-other boundary,” Dr. Woolley says. People who take them often say it’s “helped them feel more connected to themselves and other people.” LSD, first synthesized in 1938, may help increase empathy in some people.
Psilocybin, a compound found in over 200 species of mushrooms and used for centuries in Mesoamerican rituals, also seems to boost empathy, with effects persisting for at least seven days. In Cyberball, the online ball-throwing game, people who took psilocybin felt less socially rejected, an outcome reflected in their brain activation patterns in one study — the areas responsible for social-pain processing appeared to dim after a dose.