Could solar and gas stoves lower blood pressure?

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: This research will recruit and enroll 650 households (250 households in the full subsidy arm; 250 households in the control arm; 150 households in the discount subsidy arm). The household level inclusion criteria is as follows: * Home resides in the study area of Isangano and Karambi * Uses biomass as primary cooking fuel * Either both an adult male (at least 18 years old) and female (at least 18 years old), or just one adult (at least 18 years old), head(s) of household willing to consent and at least one child between 8 and 15 years of age willing to assent; We will recruit the younger child in families with more than one child between 8-15 years of age. We will also confirm the child is living at home throughout the year and not attending boarding school elsewhere. * No commercial cooking * No smoking in the household Additional participant level inclusion is as follows: * Not planning to move in 3-year timeframe * Not currently pregnant (females); Note: If the female becomes pregnant during the study she will not be able to participate in any visits that occur during her pregnancy but she will be able to participate after she has given birth. However, if there is another adult in the household then this will not preclude the other two people (i.e., the other adult and the child) from continuing to participate throughout that time. Exclusion Criteria: The household level exclusion criteria is as follows: * Home resides outside the study area * Uses clean fuel as primary cooking fuel * Participants outside the age ranges: Adult male (at least 18 years old) and female (at least 18 years old) heads of household willing to consent and at least one child between 8 and 15 years of age willing to assent * Conducts commercial cooking * Smoking members of the household Additional participant level exclusion is as follows: * Planning to move in 3-year timeframe * Currently pregnant (females)