The lifespan of a person is influenced by a variety of factors, including genetics, environment, lifestyle choices, and socioeconomic status. As such, it is difficult to provide a straightforward answer to the question of how long tall people live. However, there is some evidence to suggest that height may play a role in lifespan.

Several studies have suggested that taller individuals may have a slight advantage when it comes to lifespan. One study published in the journal PLoS One in 2013 analyzed data from nearly 1.3 million Swedish men and found that taller men tended to live longer than their shorter counterparts. The study found that men who were taller than 182.5 cm (about 6 feet) had a 2.2% lower mortality rate than men who were shorter than 167.5 cm (about 5 feet 6 inches).
Similarly, a study published in the journal eLife in 2016 analyzed data from more than 8,000 men and women in the United States and found that height was positively correlated with lifespan. The study found that each additional inch of height was associated with a 2.2% lower risk of death from all causes.
While these studies suggest that there may be a correlation between height and lifespan, it is important to note that the relationship is not necessarily causal. In other words, being tall does not necessarily cause a person to live longer, but rather, there may be other factors that contribute to both height and longevity.
For example, genetics may play a role in both height and lifespan. There are a number of genes that have been identified as being associated with both height and longevity, including the FOXO3 gene. This gene has been linked to a lower risk of age-related diseases and a longer lifespan, as well as taller stature.
In addition to genetics, there are a number of lifestyle factors that can influence lifespan. Regular exercise, a healthy diet, not smoking, and moderate alcohol consumption have all been associated with a longer lifespan. Taller individuals may also have an advantage in these areas, as they may be more physically capable and have a higher basal metabolic rate.
However, there are also potential drawbacks to being tall that could impact lifespan. For example, taller individuals may be more prone to certain health conditions, such as back pain, joint problems, and cardiovascular disease. Additionally, tall individuals may have a higher risk of developing certain types of cancer, such as breast cancer and melanoma.
In conclusion, while there is some evidence to suggest that taller individuals may have a slight advantage when it comes to lifespan, there are a variety of factors that can influence how long a person lives. Genetics, environment, lifestyle choices, and other factors all play a role in determining lifespan, and being tall is just one of many factors that may contribute. As such, it is difficult to make broad generalizations about how long tall people live, and each person’s lifespan is unique to their individual circumstances.