Minimum Effective Dose

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Last update: 2025-01-01

Minimum Effective Dose (MED) refers to the smallest dose of a substance, action, or effort required to produce a desired effect or outcome. It is a concept widely used in various fields, such as medicine, fitness, productivity, and learning. The idea is to optimize efficiency by achieving results with the least amount of input, thereby saving time, energy, or resources.

Key Examples of MED

  1. Medicine: The smallest amount of a drug that effectively treats a condition without causing unnecessary side effects.
  2. Fitness: The least amount of exercise needed to stimulate muscle growth or improve cardiovascular health. For example, doing the minimal number of strength-training sets that lead to measurable muscle gains.
  3. Productivity: Completing only the essential tasks that yield the most significant results, based on the Pareto Principle (80/20 rule). For instance, identifying and focusing on the 20% of work that drives 80% of outcomes.
  4. Learning: Using techniques like spaced repetition or active recall to learn a subject effectively with the fewest study sessions.

Benefits of MED

Application

To find the MED for any activity, experiment with incremental adjustments and measure the outcomes. For example, in fitness, gradually reduce your workout duration or intensity until you find the smallest effort that still gives results.

The concept is especially popularized in productivity and personal development circles by figures like Tim Ferriss, who advocate for “working smarter, not harder.”