How political economy is integrated with ecological and adaptability perspectives in bio-cultural anthropology ? (Answer in 250 words)

- How political economy is integrated with ecological and adaptability perspectives in bio-cultural anthropology ? (Answer in 250 words)
Introduction
Biocultural anthropology once explained human biology by environment and adaptation alone. Political economy entered by showing that the environment a population adapts to is itself produced by land tenure, markets and state power.

Body
1. What the earlier perspectives claimed: human adaptability research, formalised in the International Biological Programme (1964-74), treated the population as a homeostatic system responding to environmental stress. Paul Baker's Nunoa Quechua studies read enlarged chest volume and altered growth as acclimatization to hypoxia; Steward's cultural ecology treated technology as the adaptive interface.
2. What political economy added: Eric Wolf's Europe and the People Without History (1982) and critical medical anthropology insisted that hypoxia is not the peasant's real stressor — landlessness, unequal exchange and labour extraction are. Adaptation can naturalise deprivation, as when small body size is read as efficient rather than as stunting, and Thomas showed that a response adaptive at one level is often costly at another.
3. How they are joined: the biocultural synthesis of Goodman and Leatherman links levels explicitly. Household political-economic data — landholding, wage, caste, gender, indebtedness — are analysed against biological measures such as anthropometry, haemoglobin, cortisol and allostatic load, telomere length and epigenetic marks. Lock's local biologies and the developmental origins framework provide the mechanism by which structure becomes physiology.
4. An illustration: Leatherman's Andean work traced a spiral in which illness cuts labour, forces land sale and worsens nutrition; Indian analogues are the anaemia and low body mass of displaced and landless tribal households.

Conclusion
The integration keeps the biology and adds the cause behind the constraint. Its test is whether measurable biological outcomes can be shown to vary with position in a structure of inequality, and they can.