Biohacking, a term that blends biology with hacking, describes a wide array of practices that aim to manipulate biology to enhance the body's performance, optimize health, or alter one’s biological makeup. The community of people who engage in these practices are known as biohackers. They range from professional scientists working within academic and medical fields to amateurs working in home laboratories.

Biohacking can be segmented into several forms, including nutrigenomics, grinder, DIY biology, and quantified self. Nutrigenomics involves modifying one's diet based on genetic data to optimize health and prevent disease. This approach uses genetics to provide guidance on how different nutrients may affect the body at a molecular level.

Grinders represent a niche group of biohackers who use cybernetic devices to enhance the human body. They might implant electronics such as RFID chips or magnets into their bodies to interact with their environment in new ways or to extend their sensory capabilities.

DIY biohacking is often synonymous with DIY biology, which is more science-focused. This subset engages in scientific experiments typically related to genetics, biotechnology, or pharmaceuticals from non-traditional labs, such as garages or dedicated home spaces.

The quantified self movement, which can be considered a part of wider biohacking culture, involves using technology to track various physiological data. This may include monitoring steps, heart rate, sleep patterns, and much more to make empirically informed decisions about personal health and well-being.

Despite its innovative promises, biohacking has stirred ethical and safety concerns, particularly around experiments performed outside of formal lab environments. The risks include potential personal harm from untested procedures or implants, and societal concerns related to biosecurity and the lack of regulatory oversight.

On the flip side, proponents of biohacking see it as a way to democratize science, empowering individuals to take charge of their own health and expand human capabilities. They advocate for open access to scientific knowledge and tools, which they believe can accelerate discovery and innovation in ways that traditional science sometimes cannot.

Implications of biohacking can be profound, offering revolutionary approaches to healthcare, longevity, and human capabilities, yet knowing where to draw ethical and safety lines will be a continuing challenge as the movement grows.