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Fluorescent lamps with magnetic ballasts flicker at a normally unnoticeable frequency of 100 or 120 Hz (twice of the utility frequency; the lamp is lit on both the positive and negative half-wave of a cycle). This flickering can cause problems for some individuals with light sensitivity [ 1] and are associated with headaches and eyestrain.
Exposing skin to the ultraviolet radiation in sunlight has both positive and negative health effects. On the positive side, exposure allows for the synthesis of vitamin D 3. Vitamin D has been suggested as having a wide range of positive health effects, which include strengthening bones [1] and possibly inhibiting the growth of some cancers.
Pruritic folliculitis of pregnancy. Pruritic folliculitis of pregnancy is a skin condition that occurs in one in 3000 people, about 0.2% of cases, who are in their second to third trimester of pregnancy where the hair follicle becomes inflamed or infected, resulting in a pus filled bump. [ 1] Some dermatologic conditions aside from pruritic ...
Hair-straightening products may significantly increase the risk of developing uterine cancer among those who use them frequently, a large study published on Monday suggests. "We estimated that 1. ...
Women who use chemical hair-straightening products may be at a higher risk for uterine cancer, and Black women may be more affected due to their higher rate of use, according to a new study. The ...
Women using chemical hair-straightening products are at a higher risk of uterine cancer. Researchers noted that Black women may have a higher risk because they are more likely to use such products.
Ultraviolet index. The ultraviolet index, or UV index, is an international standard measurement of the strength of the sunburn -producing ultraviolet (UV) radiation at a particular place and time. It is primarily used in daily and hourly forecasts aimed at the general public. The UV index is designed as an open-ended linear scale, directly ...
A new study that Black women are at a higher risk of uterine cancer because of their use of chemical hair-straightening products.