Value chain · CLM-1361
In plain terms
The same lab that once reported microwaves made mice grow faster repeated the test properly and found no effect, and said its earlier result should not be relied on.
The claim as recorded
A 1973 journal paper reports that weanling mice exposed to 2450 MHz at 10 mW/cm2 (100 W/m2) for 2 minutes in every hour, day and night, for 36 days grew no differently from controls (t-tests on days 0, 18 and 36, all P well above 0.05; 96 exposed and 100 control mice at the end). Body temperature rose by under 0.025 deg C. The authors, from the laboratory that ran the original 1957 test, say that test was not properly done, that a later paper which presented its data as a growth effect gave the density wrongly as 0.02 W/cm2 when 10 mW/cm2 was used, and that the reported growth stimulation is probably within normal between-group differences.
Evidence behind this: T1, a refereed journal paper; it permits "the paper reports Y". 104 mice per group at the start.
Scope and limits
ANIMAL, NOT HUMAN. Growth is the only endpoint. Pulsed schedule: time-average 10 x 2/60 = 0.33 mW/cm2 (3.3 W/m2), inside the fence-line range, with 2-minute peaks at 100 W/m2; total on-time 48 min/day x 36 = 28.8 h (our arithmetic). Field method described in earlier reports, not in this paper.
What it assumes
No assumptions are recorded against this claim.
Where it comes from
PDF p.2: 104 mice per group, 10 mW/cm2 for 2 min each hour, temperature rise under 0.025 deg C, individual weighing (paraphrase). PDF p.4: t values and P (paraphrase). PDF p.5: density discrepancy, 10 mW/cm2 actually used; the preliminary experiment "should have been lost to posterity".
Basis: mW/cm2 incident; 2 min each hour, daily, 36 days; body weight by Student's t
Related records
- Answers question
- QST-023 not published in this release
- Contradicts
- CLM-1342 (low confidence) A US mouse study, with tests run in 1957 and published in 1961 or later, found that repeated...
Cite this
energyaperture.com/c/clm-1361
CLM-1361, Energy Aperture, as of 1973.
Connected records
Other published records linked to this one. A list, not a judgement.
- Contradicted by
- CLM-1342 (low confidence)A US mouse study, with tests run in 1957 and published in 1961 or later, found that repeated short microwave doses too weak to warm the...